Main Products: valves ,flange ,pipe fittings ,gasket ,bolts and nuts
B18.31.2 Steel Double Ended Bolt Fine Teeth Rough Pole Clamping Studs UNF
Negotiable /Piece
Min.Order:100 Pieces
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Shaanxi Flourish Industrial Co., Ltd.
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Business Type: Manufacturer
Xi'an Shaanxi ChinaMain Products: valves ,flange ,pipe fittings ,gasket ,bolts and nuts
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Product Details
| ize: | 1/4"- 1 1/2" | Standard: | ANSI/ASME, EN, DIN, BS,GB, ISO |
|---|---|---|---|
| Finish: | Oxide | Color: | Black |
| Thread: | UNF | Brand Name: | FLRS |
| High Light: | Steel Double Ended Bolt Fine Teeth, UNF Rough Pole Clamping Studs, Double Ended Clamping Studs B18 | ||
Standard B18.31.2 Steel Double Ended Bolt Fine Teeth / UNF Rough Pole Clamping Type Studs
Use of coarse and fine threads:
(1) Fine threads are suitable for anti-vibration and easy to adjust the clearance, but the locking force is worse than coarse threads. It is suitable for applications where the clearance or torque is to be adjusted.
(2) Coarse threads have a poorer self-locking ability than fine threads, but the locking force is greater than fine threads. Generally there is no special requirement to use coarse threads.
Data:
| Standard | ANSI/ASME, JIS, EN, DIN, BS,GB, SH, HG, IFI, ISO |
| Size | Standard & non-standard, customized |
| Material | Carbon steel |
| Grade | 4.8,6.8,8.8,10.9,12.9 |
| Thread | UNC,UNF,BSW |
| Finish | Black oxide |
| Packing | cartons on pallet or wooden case |
| Test Equipments | Desktop direct- reading spectrometer, cutting machine, automatic pre- milling machine, polishing machin, |
| hard-testing gauge(Vickers), metallography microscope, electrolytic thickness gauge, tensile testing machine, | |
| salt spray device, magnetic detection machine(magnetic particle flaw detector), Caliper, Go&No-go gauge and etc. | |
| Supply Ability | About 80 tons per month |
| MOQ | 5pcs |
| Trade Term | FOB/CIF/CFR/CNF/EXW/DDU |
| Payment | T/T, L/C ,D/P , Western Union |
ASME/ANSI B18.31.2-2 Rough pole clamping type studs fine teeth-Table 2
| d | 1/4 | 5/16 | 3/8 | 7/16 | 1/2 | 9/16 | 5/8 |
| p | 28 | 24 | 24 | 20 | 20 | 18 | 18 |
| c max | 0.071 | 0.083 | 0.083 | 0.1 | 0.1 | 0.111 | 0.111 |
| ds max | 0.25 | 0.3125 | 0.375 | 0.4375 | 0.5 | 0.5625 | 0.625 |
| ds min | 0.243 | 0.304 | 0.367 | 0.428 | 0.491 | 0.552 | 0.615 |
| d | 3/4 | 7/8 | 1 | 1-1/8 | 1-1/4 | 1-3/8 | 1-1/2 |
| p | 16 | 14 | 12 | 12 | 12 | 12 | 12 |
| c max | 0.125 | 0.143 | 0.167 | 0.167 | 0.167 | 0.167 | 0.167 |
| ds max | 0.75 | 0.875 | 1 | 1.125 | 1.25 | 1.375 | 1.5 |
| ds min | 0.739 | 0.863 | 0.987 | 1.112 | 1.237 | 1.362 | 1.487 |
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