| Product Name |
Carriage bolt / Round head square neck bolt / carriage srew / carriage head bolt |
| Standard |
ASTM B18.5, DIN603, DIN604, DIN608 |
| Material |
carbon steel, alloy steel, stainless steel, brass, Al, etc. |
| Grade |
ASTM A307 Grade A, SAE J429 Gr.2, 5, 8; CL 4.8, 8.8, 10.9, 12.9 |
| Size |
1/4-1" / M5-M20 |
| Thread |
M, UNC, UNF |
| Surface treatment |
black, zinc plated, HDG, Dacromet, Nickel, Chrome,Geomet 500B, Magni |
| Package |
Bulk in cartons (18kgs or 25kgs )+ wooden pallets; bulk in wooden case; bulk in steel pails +wooden pallets, or according to the customer's requirements. |
| Delivery time |
15-30 days in peak season; 25-45 days in off season |
| Trade term |
EXW, FOB, CIF, CFR, DAP, DDU, DDP, etc. |
| Port |
Shanghai or Ningbo port |
| Payment |
T/T, L/C, paypal, western union, etc. |
Strictly complies with ISO9001:2008 system, Each production process be well managed through self inspection, routing inspection by our workers. Our test equipments include: tensile machines, hardness tester, salt spray tester, Image measurement instrument, caliper, GO & NO-GO guage, etc.
Test and issue Material
Test Report and Inspection Report by Hengrui before shipment to guarantee the product quality. The test report from the third parts are also avaliable as customer's requirments.
1. Bolts: hex bolt, hex cap screw, heavy hex bolt, heavy hex structural bolt, carriage bolt, hex flange bolt, square bolt, plow bolt, step bolt, T head bolt, tensile control bolt, shoulder bolt, tower bolt, timber bolt, guardrail bolt, hex socket cap screw
.
2. Nuts: hex nut, heavy hex nut, square nut,hex flange nut, hex nylon lock nut, slotted nut, eye nut, hex cap nut, keps nut, all metal locknuts, metal insert lock nuts, U clip nut.
3. Washers: flat washer/ plain washer, fender washer, taper bolt, square washer,
helical spring-lock washer, hardened steel washers, external / internal tooth lock washer
4. Non standard Fasteners: bolts, nuts and washers in turning process or stamping ports, drill holes, special material.
5. Turning Parts or machining parts in turning process, grinding process, milling process,drilling process.
6. Stamping or sheet metal parts in stamping process, drawing process, welding process,etc.
* Strong Technical support: our engineer in fastener industry for about 20 years are hear for you.
* With 50 friend factories support, we can customize many non-standard fasteners according to the drawings or samples, as well as turning parts and stamping parts.
* 10 years' experience in international trading industry.
* Our company policy: Product quality>lead time>pricing, welcome the customers which have the same belief to inquiry to us!
Looking forwarding to cooperate with you, we will use our best service to prove your choice right!
Audited Supplier 
Audited Supplier 
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