China manufacturer Cross Flat Pad Combination Lead Screw for Electric Fan/Electronic Appliances with Best Sales

Product Description

The role of lead screw is not allowed to start a private, the goods play a protective role. Once the seal is properly locked, it can not be opened unless the violence is broken, and the damaged seal can not be reused.
Applicable scope:
1>railway, aviation, oil, customs, port, postal and other logistics industry.
2>mining, highway, finance, chemical, petroleum, container, pharmaceutical and other industries.
3>gas meter, instrument, table box and so on.

Cross Flat pad combination lead screw for electric fan/electronic appliances

Brand	HangZhou	Model	CC-098A
Category	Mechanical screws	Head type	Round head
Slot Type	Cross	Screw diameter	8 mm
Screw length	3~110 mm  (available)	Mode of action	Hand Twist
Thread size	M5	Thread Tolerance	6G
Nominal length	110  mm	Surface treatment	Galvanized
Material Grade	Carbon Steel	Product Grade	Class A
Customization	Yes	Material	Heat Treatment

Our company has a strong production capacity,we sale professional fastener and fittings.Our products meets the international quality system,such as ANSI and  BS. We provide the high quality and professional fastener for construction steel, car, machinery and equipment, energy,furniture, ship, railway and so on. In the whole production process, We have professional engineers to monitor the quality,we can guarantee the quality of our product.We are committed to continuously improvement and innovation, to meet customer requirements, And work closely with our partners to provide qualified parts, competitive prices and best service to every customer. We would like to thank you for your interest in our company and hope that our website will help you. If you need more information, please contact our sales department.
Screw,bolt,nut,manufacturer/supplier in china,offering carbon steel hexagonal head combined assembly screws for fan parts,Non-standard slotted fillster screw for building,non-standard slotted fillster screw and so on.

If you are interested in any of our products, please free feel to contact us. More information of our products will be forwarded to you upon receipt of your specific inquiry.

 

Screw international standard
ITEM	DIN-STHangZhouRD	ISO-STHangZhouRD	GB-STHangZhouRD	DESCRIPTION IN ENGLISH
1	DIN1	ISO2339	GB117	taper pins
2	DIN7	ISO2338	GB119-86	parallel pins
3	DIN84	ISO1207	GB65-85	slotted cheese head screws
4	DIN85	ISO1580	GB67-85	slotted pan head screws
5	DIN93		GB854	tab washers
6	DIN94	ISO1234	GB91	split cotter pins
7	DIN95		GB101	slotted raised csk head wood screws
8	DIN96		GB99	slotted round head wood screws
9	DIN97		GB100	slotted countersunk head wood screws
10	DIN125-A	ISO708	GB97.1-85	plain washers
11	DIN125-B	ISO7090	GB97.2-85	mediun washers
12	DIN126	ISO7091		plain washers
13	DIN127-A		GB7244	spring lock washers,tang ends
14	DIN127-B		GB93-87	spring lock washers,square ends
15	DIN128-A		GB7245-87	single coil spring lock washers
16	DIN137-A			curved spring washers
17	DIN137-B		GB955	wave spring washers
18	DIN186		GB37-88	t-head bolts with square neck
19	DIN188			t-head bols with double nip
20	DIN258	ISO8737		taper pins with threaded end
21	DIN261			t-head bolts
22	DIN315AF			wing nuts amercia form
23	DIN315DF		GB62-88	wing nuts germany form
24	DIN316AF			wing screws amercia form
25	DIN317DF			wing screws germany form
26	DIN3179			ball knobs
27	DIN404		GB832-88	slotted capstan screws
28	DIN417	ISO7435	GB75-85	soltted set screws with full dog point
29	DIN427	ISO2342	GB73-85	slotted set screws with chamfered end
30	DIN431		GB808-88	pipe nuts with thread
31	DIN432		GB856-88	external tap
32	DIN433	ISO7092	GB848-95	washers for cheese head screws
33	DIN434		GB852-88	square taper washers for u-sections
34	DIN435		GB852-88	square taper washers for i-sections
35	DIN436			square washers
36	DIN438	ISO7436	GB74-85	soltted set with cup point
37	DIN439	ISO4035	GB6172-86	hexagon thin nuts
38	DIN439	ISO8675	GB6173-86	hexagon thin nuts
39	DIN440	ISO7094		rounds washers for wood constructions
40	DIN443			sealing cap, push-in type
41	DIN444		GB798-88	eye bolts form
42	DIN462			internal tab washers
43	DIN463		GB855-88	washers with two taps
44	DIN464		GB834-88	knurled thumb screws with collar
45	DIN465			slotted knurled thumb screws with collar
46	DIN466		GB806-88	knurled thumb nuts with collar
47	DIN467		GB807-88	knurled thumb thin nuts
48	DIN470			sealing washers
49	DIN471		GB894.1-86	retaining rings for shafts(external),circlips
50	DIN472		GB893.1-86	retaining rings for bores(internal),circlips
51	DIN478			square head bolts with collar
52	DIN479			square hea bolts with half dog point
53	DIN480			square head bolts with collar,half dog point and rounded end
54	DIN508			t-slot nutsiso299
55	DIN525			single end studs
56	DIN529		GB799-88	masonry bolts
57	DIN546		GB817-76	slotted round nuts
58	DIN547		GB815-88	round nuts with drilled holes in one face
59	DIN551	ISO4776	GB73-85	slotted sit screws with flat point
60	DIN553	ISO7434	GB71-85	slotted set screws with cone point
61	DIN555	ISO4034		hexagon nuts
62	DIN557		GB39-88	-csquare nuts
63	DIN558	ISO4018		hexagon screws
64	DIN561			hexagon set screws with full dog point
65	DIN52			bsquare nuts without bevel(pressed nuts)
66	DIN571		GB102-86	hexagon head wood screws (coach screws)
67	DIN580	ISO3266	GB825-76	lifting eye bolts
68	DIN582			lifting eye nuts
69	DIN601	ISO4016		hexagon bolts
70	DIN603	ISO8677	GB14-88	mushroom head square neck bolts (carriage bolts)
71	DIN604			flat countersunk nib bolts
72	DIN605			flat countersunk long square neck bolts
73	DIN607			cup head nib bolts
74	DIN607			flat countersunk shout square neck bolts
75	DIN609			hexagon fitted bolts,long thread
76	DIN610			hexagon fitted bolts,short thread
77	DIN653		GB835-88	knurled thumb screws thin type
78	DIN660	ISO1051	GB867-86	round head rivets
79	DIN661	ISO1051	GB869-86	contersunk head rivets
80	DIN662	ISO1051		raised contersunk head rivets
81	DIN674	ISO1051		mushroom head rivets
82	DIN703			adjusting rings,heavy range (shafting collars)
83	DIN705		GB816-88	adjusting rings,light range(shafting collars)
84	DIN741			wire rope clips
85	DIN787T	ISO299		t-slot screws
86	DIN835		GB900-88	studs-metal(end=2d)
87	DIN906			hexagon socket pipe plugs,conical thread
88	DIN908			hexagon socket screw plugs,cyl.thread
89	DIN909			hexagon head pipe plugs,conical thread
90	DIN910			hexagon head screw plugs,cyl.thread
91	DIN911	ISO2936		socket wrenches
92	DIN912	ISO4762	GB70-85	hexagon socket cap screws
93	DIN913	ISO4026	GB77-85	hexagon socket set screws with flat piont
94	DIN914	ISO4571	GB78-85	hexagon socket set screws with cone point
95	DIN915	ISO4571	GB79-85	hexagon socket set screws with dog point
96	DIN916	ISO4571	GB80-85	hexagon socket set screws with cup point
97	DIN917			hexagon cap nuts
98	DIN920			slotted short cheese head screws
99	DIN921		GB838-88	slotted large cheese head screws
100	DIN923		GB830-88	slotted pan head screws with shoulder
101	DIN927			slotted shoulder screws
102	DIN928		GB/T13680-92	square weld nuts
103	DIN929		GB/T13681-92	hexagon weld nuts
104	DIN931	ISO4014	GB5782-86	hexagon head screws
105	DIN933	ISO4017	GB5783-86	hexagon head screws
106	DIN934	ISO4032	GB6170-86	hexagon full nuts
107	DIN934	ISO8673	GB6171-86	hexagon full nuts
108	DIN935	ISO7035	GB6178-86	hexagon slotted and castle nuts
109	DIN936	ISO4035	GB6172.1-86	hexagon thin nuts
110	DIN937	ISO7038	GB6181-86	hexagon thin slotted and castle nuts
111	DIN938		GB897-88	studs metal(edn=1d)
112	DIN939		GB898-88	studs metal (end=1.25d)
113	DIN940			studs metal (end=1.5d)
114	DIN960	ISO8765	GB5785-86	hexagon head bolts,metric fine pitch thread
115	DIN961	ISO8676	GB5786-86	hexagon head bolts ,metric fine pitch thread
116	DIN962			additional shapes and versions for bolts
117	DIN963	ISO2009	GB68-85	slotted countersunk head screws
118	DIN964	ISO2571	GB69-85	slotted raised countersunk oval head screws
119	DIN965	ISO7046	GB819-85	cross recessed countersunk head screws
120	DIN966	ISO7047	GB820-85	cross recessed raised countersunk head screws
121	DIN970			hexagon nuts type-1
122	DIN971			hexagon nuts type-2
123	DIN972	ISO8674	GB6176-86	hexagon nuts with fine thread
124	DIN975		GB15389-94	threaded rods(studdings_
125	DIN976			threaded pins(stud bolts)
126	DIN979			hexagono thin slotted and castle nuts
127	DIN980	ISO7199	GB6184-86	prevailling torque type hexagon nuts,all metall nuts
128	DIN981	ISO2982	GB812-88	locknuts
129	DIN982	ISO7040	GB889.1-86	prevailling torque type hexagon nuts,heavy type,with nylon insert
130	DIN985	ISO1571	GB6172.2-86	prevailling torque type hexagon nuts,heavy type,with nyllon insert
131	DIN986			prevailling torque typedomed capnuts with nylong insert
132	DIN988			shim rings
133	DIN1052			washers for timber connectors
134	DIN1151			round plain head nails
135	DIN1440	ISO8738		plain washers for clevis pins(a)
136	DIN1441			plain washers for clevis pins
137	DIN1444	ISO2341		clevis pins with head
138	DIN1471	ISO8744	GB/T13829.2	grooved pins,taper grooved
139	DIN1472	ISO8745	GB/T13829.2	grooved pins,taper grooved half length
140	DIN1473	ISO8740		grooved pins,parallel grooved full length
141	DIN1474	ISO8741		grooved pins,reserve grooved half length
142	DIN1475	ISO8742		grooved pins,centre grooved
143	DIN1476	ISO8746	GB/T13829.3	grooved pins with round head
144	DIN1477	ISO8747		grooved pins with countersunk head
145	DIN1479			turnuckles(centre parts),made out of hexagon bar
146	DIN1480			turnuckles with eye bolt and hook bolt
147	DIN1481	ISO8752	GB879-86	spring pins,heavy type
148	DIN1587		GB802-88	hexagon domed cap nuts
149	DIN1804			slotted round nuts for hook spanner
150	DIN1816			round nuts with set holes
151	DIN2093			disc springs
152	DIN3017			hose clamps
153	DIN3404			lubricating nipples,button head
154	DIN3567			shackles for conduilts
155	DIN3570			stirrup bolts(u-bolts)
156	DIN6319		GB849-88	spherical washers,conical seats
157	DIN6325	ISO8734		parallel pins
158	DIN6330		GB56-88	hexagon nuts,1.5d
159	DIN6331		GB6177-86	hexagon nuts ,1.5d with collor
160	DIN6334			hexagon nuts,3d
161	DIN6797-A		GB862.1-87	external teeth lock washers
162	DIN6797-I		GB861.1-87	internal teeth lock washers
163	DIN6798-A		GB862.2-87	external teeth serrated lock washers
164	DIN6798-I		GB861.2-87	internal teeth serrated lock washers
165	DIN6799		GB896-76	retaining rings for shafts(e-rings),circlips
166	DIN6885	ISO773/2491		parallel keys(forma)
167	DIN6888	ISO3912		woodruff deys
168	DIN6899			thimbles
169	DIN6900		GB9074.1-.17	screws and washers assemblies
170	DIN6901		GB9074.18-.23	tapping screws and washers assemblies
171	DIN6912			hexagon socket head cap screws with hole,low head
172	DIN6914			hexagon head bolts with large head(friction grip bolts)
173	DIN6915			hexagon nuts with large wideth across flat(friction grip nuts)
174	DIN6916			round washers for friction grip bolts
175	DIN6917			spuare taper washers for friction grip bolts on t-sections
176	DIN6923	ISO4161	GB6177-86	hexagon flange nuts
177	DIN6925	ISO7042	GB6185.1-2000	prevailing touque type hexagon nuts,all metallic nuts
178	DIN7337		GB12617/12618	blind rivets
179	DIN7338		GB875/975-86	rivets for brake and clutch lining
180	DIN7343	ISO8750		spiral pins
181	DIN7346	ISO13337		spring pins,light type
182	DIN7349			washers for bolts with heavy type spring pins
183	DIN7500			thread forming screws for iso-metric thread
184	DIN7504			self-drilling tapping screws
185	DIN7513			thread cutting screws
186	DIN7516			thread cutting screws cross recess
187	DIN7965			tee nuts with pronge
188	DIN7968		GB1228/1229/1230	hexagon head fitted bolts for steel structures
189	DIN7971	ISO1481	GB5282-85	pan head tapping screws with slot
190	DIN7972	ISO1482	GB5283-85	countersunk flat head tapping screws with slot
191	DIN7973	ISO1483	GB5284-85	raised countersunk oval head tapping screws with slot
192	DIN7976	ISO1479	GB5285-85	hexagon tapping screws
193	DIN7980	ISO8738		spring lock washers for screws with cylindrical heads
194	DIN7981	ISO7049	GB845-85	pan head tapping screws with cross recessed
195	DIN7982	ISO7050	GB846-85	countersunk flat head tapping screws with cross recessed
196	DIN7983	ISO7051	GB847-86	raised countersunk oval head tapping screws with cross recessed
197	DIN7984			hexagon scocket head cap screws with,reduced head
198	DIN7985	ISO7045	GB818-85	pan head screws with cross recessed
199	DIN7989		GB1230-84	washers for steel structures
200	DIN7990		GB1229-84	hexagon head bolts for steel structures
201	DIN7991	ISO10642		hexagon socket countersunk head screws
202	DIN7993		GB895.2-86	roundwire snap rings for shafts
203	DIN7995		BG952-86	cross recessed raised countersunk head wood screws
204	DIN7996		BG950-86	cross recessed round head wood screws
205	DIN7997		GB951-86	cross recessed countersunk head wood screws
206	DIN8140			ciol inserts,coarse,fine thread,silf locking
207	DIN9571	ISO7093	GB96-85	washers,outside diameter appro.3d
208	DIN11571			spring cotter for a bolt
209	DIN13257			belting bolts (elevator bolts)
210	DIN18182			dry wall screws
211	DIN28129		GB63-88	lifting nuts(eye nuts)
212	DIN7 0571		GB858-88	tab washers for slotted round nuts

FAQ:
1) Q:What’s your product range?
A:  Our product range includes screws, nuts, knobs, bolts, washers, rivet, anchor and CNC parts. We strictly implement various quality standards like GB, ISO, DIN, JIS, AISI NFE and BSW.Non-standard products also accepted.

2)Q:Are you a Trading company or a Manufacturer?
A: We are an Industry&Trade Company .

3) Q:Why should I choose you? What’s your advantages? Industries you are serving?
A: We are a professional manufacturer and have 9 years production and management experience in the field of fasteners .
We can provide our customers with a good solution in the area of production design, production process,packaging and after-sale service.Customer satisfaction is our sole pursuit.
 
4) Q:Which industry field are your product is suitable used in ?
A:Our products are  widely use in machine assembling, electronics, constructional engineering furniture cabinets, etc.

Customer Service
· 1. Well trained and experienced staffs at your service. 
· 2. Short lead time. 
· 3. International standard matched
· 4. Non-standard / standard / OEM / ODM / customized service provided. 
· 5. Small Quantity available. 
· 6. Designed in accordance with customers’ request. 
· 7. Packed and delivered by customers’ requirement.

Any more questions or demands, pls feel free to contact me!

Screw Sizes and Their Uses

Screws have different sizes and features. This article will discuss screw sizes and their uses. There are 2 main types: right-handed and left-handed screw shafts. Each screw features a point that drills into the object. Flat tipped screws, on the other hand, need a pre-drilled hole. These screw sizes are determined by the major and minor diameters. To determine which size of screw you need, measure the diameter of the hole and the screw bolt’s thread depth.

The major diameter of a screw shaft

The major diameter of a screw shaft is the distance from the outer edge of the thread on 1 side to the tip of the other. The minor diameter is the inner smooth part of the screw shaft. The major diameter of a screw is typically between 2 and 16 inches. A screw with a pointy tip has a smaller major diameter than 1 without. In addition, a screw with a larger major diameter will have a wider head and drive.
The thread of a screw is usually characterized by its pitch and angle of engagement. The pitch is the angle formed by the helix of a thread, while the crest forms the surface of the thread corresponding to the major diameter of the screw. The pitch angle is the angle between the gear axis and the pitch surface. Screws without self-locking threads have multiple starts, or helical threads.
The pitch is a crucial component of a screw’s threading system. Pitch is the distance from a given thread point to the corresponding point of the next thread on the same shaft. The pitch line is 1 element of pitch diameter. The pitch line, or lead, is a crucial dimension for the thread of a screw, as it controls the amount of thread that will advance during a single turn.

The pitch diameter of a screw shaft

When choosing the appropriate screw, it is important to know its pitch diameter and pitch line. The pitch line designates the distance between adjacent thread sides. The pitch diameter is also known as the mean area of the screw shaft. Both of these dimensions are important when choosing the correct screw. A screw with a pitch of 1/8 will have a mechanical advantage of 6.3. For more information, consult an application engineer at Roton.
The pitch diameter of a screw shaft is measured as the distance between the crest and the root of the thread. Threads that are too long or too short will not fit together in an assembly. To measure pitch, use a measuring tool with a metric scale. If the pitch is too small, it will cause the screw to loosen or get stuck. Increasing the pitch will prevent this problem. As a result, screw diameter is critical.
The pitch diameter of a screw shaft is measured from the crest of 1 thread to the corresponding point on the next thread. Measurement is made from 1 thread to another, which is then measured using the pitch. Alternatively, the pitch diameter can be approximated by averaging the major and minor diameters. In most cases, the pitch diameter of a screw shaft is equal to the difference between the two.

The thread depth of a screw shaft

Often referred to as the major diameter, the thread depth is the outermost diameter of the screw. To measure the thread depth of a screw, use a steel rule, micrometer, or caliper. In general, the first number in the thread designation indicates the major diameter of the thread. If a section of the screw is worn, the thread depth will be smaller, and vice versa. Therefore, it is good practice to measure the section of the screw that receives the least amount of use.
In screw manufacturing, the thread depth is measured from the crest of the screw to the root. The pitch diameter is halfway between the major and minor diameters. The lead diameter represents the amount of linear distance traveled in 1 revolution. As the lead increases, the load capacity decreases. This measurement is primarily used in the construction of screws. However, it should not be used for precision machines. The thread depth of a screw shaft is essential for achieving accurate screw installation.
To measure the thread depth of a screw shaft, the manufacturer must first determine how much material the thread is exposed to. If the thread is exposed to side loads, it can cause the nut to wedge. Because the nut will be side loaded, its thread flanks will contact the nut. The less clearance between the nut and the screw, the lower the clearance between the nut and the screw. However, if the thread is centralized, there is no risk of the nut wedgeing.

The lead of a screw shaft

Pitch and lead are 2 measurements of a screw’s linear distance per turn. They’re often used interchangeably, but their definitions are not the same. The difference between them lies in the axial distance between adjacent threads. For single-start screws, the pitch is equal to the lead, while the lead of a multi-start screw is greater than the pitch. This difference is often referred to as backlash.
There are 2 ways to calculate the pitch and lead of a screw. For single-start screws, the lead and pitch are equal. Multiple-start screws, on the other hand, have multiple starts. The pitch of a multiple-start screw is the same as its lead, but with 2 or more threads running the length of the screw shaft. A square-thread screw is a better choice in applications requiring high load-bearing capacity and minimal friction losses.
The PV curve defines the safe operating limits of lead screw assemblies. It describes the inverse relationship between contact surface pressure and sliding velocity. As the load increases, the lead screw assembly must slow down in order to prevent irreversible damage from frictional heat. Furthermore, a lead screw assembly with a polymer nut must reduce rpm as the load increases. The more speed, the lower the load capacity. But, the PV factor must be below the maximum allowed value of the material used to make the screw shaft.

The thread angle of a screw shaft

The angle between the axes of a thread and the helix of a thread is called the thread angle. A unified thread has a 60-degree angle in all directions. Screws can have either a tapped hole or a captive screw. The screw pitch is measured in millimeters (mm) and is usually equal to the screw major diameter. In most cases, the thread angle will be equal to 60-degrees.
Screws with different angles have various degrees of thread. Originally, this was a problem because of the inconsistency in the threading. However, Sellers’s thread was easier to manufacture and was soon adopted as a standard throughout the United States. The United States government began to adopt this thread standard in the mid-1800s, and several influential corporations in the railroad industry endorsed it. The resulting standard is called the United States Standard thread, and it became part of the ASA’s Vol. 1 publication.
There are 2 types of screw threads: coarse and fine. The latter is easier to tighten and achieves tension at lower torques. On the other hand, the coarse thread is deeper than the fine one, making it easier to apply torque to the screw. The thread angle of a screw shaft will vary from bolt to bolt, but they will both fit in the same screw. This makes it easier to select the correct screw.

The tapped hole (or nut) into which the screw fits

A screw can be re-threaded without having to replace it altogether. The process is different than that of a standard bolt, because it requires threading and tapping. The size of a screw is typically specified by its major and minor diameters, which is the inside distance between threads. The thread pitch, which is the distance between each thread, is also specified. Thread pitch is often expressed in threads per inch.
Screws and bolts have different thread pitches. A coarse thread has fewer threads per inch and a longer distance between threads. It is therefore larger in diameter and longer than the material it is screwed into. A coarse thread is often designated with an “A” or “B” letter. The latter is generally used in smaller-scale metalworking applications. The class of threading is called a “threaded hole” and is designated by a letter.
A tapped hole is often a complication. There is a wide range of variations between the sizes of threaded holes and nut threads, so the tapped hole is a critical dimension in many applications. However, even if you choose a threaded screw that meets the requisite tolerance, there may be a mismatch in the thread pitch. This can prevent the screw from freely rotating.