CrabCaptain
YOUR CAPTAIN IN CHINA SOURCING
Making It Easy to Source Industrial Products from China · 让从中国采购工业品变容易
Hex bolts, nuts, studs, washers and threaded rods in metric and inch series, for structural, flange and equipment bolting.
Pick a sub-category to narrow the catalog选择细分品类缩小目录
Full master-catalog extract — real part numbers, names and materials, rendered on the server so search engines can index every item. 全量型号目录（服务器渲染，便于收录）。
| Part No. | Description | Material |
|---|---|---|
| GB/T858 | 垫圈36-O | Q235-B |
| GB/T79 | 螺钉M10*45-45H-O | |
| GB/T93 | 垫圈4-O | 70 |
| GB/T856 | 垫圈16-O | Q235-B |
| GB/T70.1 | 螺钉M20*40-10.9-O | 35CrMo |
| GB/T5783 | 螺栓M4*25-8.8-O | |
| GB/T70.1 | 螺钉M5*50-8.8-O | |
| GB/T95 | 垫圈10-100HV-O | |
| GB/T70.1 | 螺钉M6*25-8.8-O | |
| GB/T5782 | 螺栓M42*220-8.8-O | |
| GB/T5783 | 螺栓M48*150-8.8-O | |
| GB/T97.1 | 垫圈14-200HV-O | |
| GB/T5782 | 螺栓M8*35-8.8-O | |
| GB/T5783 | 螺栓M5*10-8.8-O | |
| GB/T70.1 | 螺钉M5*16-8.8-O | |
| GB/T70.1 | 螺钉M16*180-8.8-O | |
| GB/T70.1 | 螺钉M16*185-8.8-O | |
| GB/T5783 | 螺栓M48*240-8.8-O | |
| GB/T5783 | 螺栓M48*250-8.8-O | |
| GB/T5786 | 螺栓M24*2*100-8.8-O | |
| GB/T5786 | 螺栓M24*2*110-8.8-O | |
| GB/T5782 | 螺栓M10*100-10.9-O | |
| GB/T819.2 | 螺钉M8*12-O | |
| GB/T5783 | 螺栓M10*60-8.8-O | |
| GB/T5783 | 螺栓M20*100-8.8-O | |
| GB/T848 | 垫圈3-140HV-O | |
| GB/T95 | 垫圈27-100HV-O | |
| GB/T70.1 | 螺钉M3*12-8.8-O | |
| GB/T5783 | 螺栓M3*10-8.8-O | |
| GB/T5783 | 螺栓M20*45-8.8-O | 35CrMo |
| GB/T5783 | 螺栓M20*65-8.8-O | 35CrMo |
| GB/T70.1 | 螺钉M16*195-8.8-O | |
| GB/T5783 | 螺栓M16*60-8.8-O | 35CrMo |
| GB/T5783 | 螺栓M14*65-8.8-O | |
| GB/T70.1 | 螺钉M10*25-8.8-O | 35CrMo |
| GB/T71 | 螺钉M4*20-14H-O | |
| GB/T70.1 | 螺钉M10*20-8.8/NiP | |
| GB/T5783 | 螺栓M6*35-8.8-O | 35CrMo |
| GB/T818 | 螺钉M5*10-4.8-O | |
| GB/T67 | 螺钉M4*10-4.8-Zn.D | |
| GB/T5783 | 螺栓M24*80-8.8-O | 35CrMo |
| GB/T5782 | 螺栓M30*290-8.8-O | |
| GB/T5783 | 螺栓M10*20-8.8-O | 35CrMo |
| GB/T70.1 | 螺钉M10*50-8.8-O | |
| GB/T71 | 螺钉M4*12-14H-O | |
| GB/T70.1 | 螺钉M12*80-8.8-O | |
| GB/T819.1 | 螺钉M6*30-4.8-O | |
| GB/T70.1 | 螺钉M8*20-8.8/NiP | |
| GB/T819.1 | 螺钉M6*55-4.8-O | |
| GB/T65 | 螺钉M4*10-4.8-Zn.D | |
| GB/T85 | 螺钉M10*35-33H-O | |
| GB/T65 | 螺钉M6*20-Zn.D | |
| GB/T5781 | 螺栓M16*35-4.8-O | |
| GB/T5783 | 螺栓M10*50-8.8-O | |
| GB/T5782 | 螺栓M10*80-8.8-O | |
| GB/T5783 | 螺栓M16*160-8.8-O | |
| GB/T67 | 螺钉M5*12-4.8-Zn.D | |
| GB/T5781 | 螺栓M24*50-4.8-O | |
| GB/T70.1 | 螺钉M16*240-8.8-O | |
| GB/T93 | 垫圈3-O | 70 |
| GB/T5782 | 螺栓M8*65-8.8-O | |
| GB/T5783 | 螺栓M3*30-8.8-O | |
| GB/T77 | 螺钉M5*8-45H-O | |
| GB/T77 | 螺钉M8*10-45H-O | |
| GB/T5783 | 螺栓M33*100-8.8-O | |
| GB/T5783 | 螺栓M6*25-8.8-Zn.D | |
| GB/T68 | 螺钉M8*14-4.8-Zn.D | |
| GB/T68 | 螺钉M5*8-4.8-Zn.D | |
| GB/T68 | 螺钉M6*14-4.8-Zn.D | |
| GB/T70.1 | 螺钉M14*35-8.8-O | |
| GB/T77 | 螺钉M8*8-45H-O | |
| GB/T5785 | 螺栓M16*1.5*90-8.8-O | |
| GB/T65 | 螺钉M6*30-4.8-Zn.D | |
| GB/T67 | 螺钉M5*40-4.8-Zn.D | |
| GB/T37 | 螺栓M20*90-8.8-O | |
| GB/T96.2 | 垫圈5 | |
| GB/T70.1 | 螺钉M5*8-8.8-O | |
| GB/T77 | 螺钉M10*10-45H-O | |
| GB/T65 | 螺钉M8*30-Zn.D | |
| GB/T5783 | 螺钉M4*8-8.8-O | |
| GB/T70.1 | 螺钉M3*10-8.8-O | |
| GB/T70.1 | 螺钉M12*155-8.8-O | |
| GB/T5782 | 螺栓M10*40-8.8-O | |
| GB/T68 | 螺钉M8*30-4.8-Zn.D | |
| GB/T858 | 垫圈30-O | Q235-B |
| GB/T65 | 螺钉M5*10-4.8-Zn.D | |
| GB/T5781 | 螺栓M10*20-4.8-O | |
| GB/T80 | 螺钉M5*16-45H-O | |
| GB/T819.2 | 螺钉M6*40-O | |
| GB/T953 | 双头螺柱M48*1800-8.8-O | |
| GB/T5782 | 螺栓M30*150-8.8-O | |
| GB/T862.2 | 垫圈14-O | 65Mn |
| GB/T862.2 | 垫圈16-O | 65Mn |
| GB/T5783 | 螺栓M20*150-8.8-O | |
| GB/T73 | 螺钉M10*12-14H-O | |
| GB/T70.3 | 螺钉M5*16-8.8-O | |
| GB/T67 | 螺钉M8*12-4.8-Zn.D | |
| GB/T5783 | 螺栓M36*70-8.8-O | |
| GB/T819.1 | 螺钉M5*16-4.8-O | |
| JB/T450 | 螺母M24-35-O | 35 |
| JB/T450 | 螺母M20-35-O | 35 |
| JB/T450 | 螺母M16-35-O | 35 |
| JB/T450 | 螺母M36-35-O | 35 |
| JB/T450 | 螺母M27-35-O | 35 |
| JB/T450 | 螺母M30-35-O | 35 |
| JB/T450 | 螺母M33-35-O | 35 |
| JB/T450 | 螺母M39-Cr-O | 35CrMo |
| JB/T450 | 螺母M42-Cr-O | 35CrMo |
| JB/T450 | 螺母M48-Cr-O | 35CrMo |
| JB/T450 | 螺母M52-Cr-O | 35CrMo |
| ASME-B18.2.2 | 螺母M16-II-O | A194Gr.2H |
| ASME-B18.2.2 | 螺母M20-II-O | ASTM.A194.7 |
| ASME-B18.2.2 | 螺母M27-II-O | ASTM.A194.7 |
| ASME-B18.2.2 | 螺母M33-II-O | ASTM.A194.7 |
| ASME-B18.2.2 | 螺母M42*3-II-O | ASTM.A194.7 |
| GB/T6170 | 螺母M14-8-O | |
| GB/T6170 | 螺母M16-8-O | |
| GB/T6170 | 螺母M24-8-O | |
| GB/T6170 | 螺母M30-8-O | |
| GB/T6170 | 螺母M36-8-O | |
| GB/T6170 | 螺母M12-8-O | |
| GB/T6170 | 螺母M8-8-O | |
| GB/T6170 | 螺母M27-8-O | |
| GB/T6170 | 螺母M10-8-O | |
| GB/T6170 | 螺母M20-8-O | |
| GB/T6170 | 螺母M48-8-O | |
| GB/T6170 | 螺母M6-8-O | |
| GB/T6170 | 螺母M56-8-O | |
| GB/T6170 | 螺母M33-8-O | |
| GB/T6170 | 螺母M36-8-O | 30CrMo |
| GB/T6170 | 螺母M27-8-O | 30CrMo |
| GB/T6170 | 螺母M24-8-O | 30CrMo |
| GB/T6170 | 螺母M39-8-O | |
| GB/T6170 | 螺母M42-8-O | |
| GB/T6170 | 螺母M22-8-Zn.D | |
| GB/T6170 | 螺母M12-8-O | 30CrMo |
| GB/T6170 | 螺母M42-8-O | 30CrMo |
| GB/T6171 | 螺母M42*3-8-O | |
| GB/T6171 | 螺母M36*3-8-O | |
| GB/T6171 | 螺母M30*2-8-O | |
| GB/T6171 | 螺母M24*2-8-O | |
| GB/T6171 | 螺母M64*4-8-O | |
| GB/T6171 | 螺母M20*2-8-O | |
| GB/T6172.1 | 螺母M12-04-O | |
| GB/T6172.1 | 螺母M39-04-O | |
| GB/T6173 | 螺母M42*3-04-O | |
| GB/T6173 | 螺母M30*2-04-O | |
| GB/T6173 | 螺母M18*1.5-04-O | |
| GB/T6173 | 螺母M42*3-05-O | |
| GB/T6173 | 螺母M24*2-04-O | |
| GB/T6175 | 螺母M12-O | 30CrMo |
| GB/T6175 | 螺母M16-O | 30CrMo |
| GB/T6175 | 螺母M20-O | 30CrMo |
| GB/T6175 | 螺母M24-O | 30CrMo |
| GB/T6175 | 螺母M27-O | 30CrMo |
| GB/T6175 | 螺母M36-9-O | |
| GB/T6175 | 螺母M33-O | 30CrMo |
| GB/T6175 | 螺母M30-O | 30CrMo |
| GB/T6178 | 螺母M10-8-O | |
| GB/T812 | 螺母M33*1.5-O | 45 |
| GB/T923 | 螺母M6-5-O | |
| GB/T923 | 螺母M8-5-O | |
| HG/T20634 | 螺母M14-O | 30CrMo |
| HG/T20634 | 螺母M16-O | 30CrMo |
| HG/T20634 | 螺母M27-O | 30CrMo |
| HG/T20634 | 螺母M24-O | 30CrMo |
| HG/T20634 | 螺母M30-O | 30CrMo |
| HG/T20634 | 螺母M33-O | 30CrMo |
| HG/T20634 | 螺母M20-O | 30CrMo |
| SH/T3404 | 螺母M14-II-O | 30CrMoA |
| SH/T3404 | 螺母M16-II-O | 30CrMoA |
| SH/T3404 | 螺母M20-II-O | 30CrMoA |
| SH/T3404 | 螺母M30-II-O | 30CrMoA |
| SH/T3404 | 螺母M24-II-O | 30CrMoA |
| SH/T3404 | 螺母M27-II-O | 30CrMoA |
| SH/T3404 | 螺母M12-II-O | 30CrMoA |
| SH/T3404 | 螺母M33-II-O | 30CrMoA |
| SH/T3404 | 螺母M24-II | 30CrMoA |
| SH/T3404 | 螺母M36*3-II-O | 30CrMoA |
| SH/T3404 | 螺母M45*3-II-O | 30CrMoA |
| ASME-B18.2.2 | 螺母M24-II-O | ASTM.A194.7 |
| ASME-4200 | 螺母1.1/8"-8UN-2B | A194.2H |
| ASME-4200 | 螺母7/8"-9UNC-2B | A194.2H |
| ASME-4200 | 螺母3/4"-10UNC-2B | A194.2H |
| GB/T17880.2 | 螺母M5*12.5 | ML10 |
| GB/T6170 | 螺母M20-8-Zn.D | |
| GB/T6170 | 螺母M20-8-O | 30CrMo |
| GB/T6170 | 螺母M16-8-Zn.D | 30CrMo |
| GB/T6170 | 螺母M14-8-Zn.D | 30CrMo |
| GB/T6170 | 螺母M14-8-Zn.D | |
| GB/T6170 | 螺母M14-8-O | 30CrMo |
| GB/T6170 | 螺母M5-8-O | |
| GB/T6170 | 螺母M30-8-O | 30CrMo |
| GB/T6170 | 螺母M4-8-O | |
| GB/T6171 | 螺母M27*2-8-O | |
| GB/T6171 | 螺母M30*2-8-O | 30CrMo |
| GB/T6172.1 | 螺母M24-04-O | |
| GB/T6172.1 | 螺母M20-04-O | |
| GB/T6172.1 | 螺母M16-04-O | |
| GB/T6173 | 螺母M16*1.5-04-O |
Page 4 / 19 · 3,726 part numbers
Grade 8.8 / 10.9 / 12.9, A2 / A4 stainless (304 / 316), B7 studs. Standards: ISO 898, ASTM A193 / A194, DIN 933 / 934.
Send us any model number from the catalog above, or describe your duty — we will match it across our verified factory network and respond within 24 hours.
资质与认证 — 合作工厂均具备完整资质（ISO、CE、材质报告 MTC、出厂检验单等）。出于商业保密，完整证书扫描与工厂资质仅在签署 NDA 后向已验证买家提供；询价时可直接向我们索取。 / Our partner factories hold full qualifications (ISO, CE, MTC material reports, mill test certificates). For commercial confidentiality, complete certificate scans and factory qualifications are shared with verified buyers under NDA on request.
Quality Management System
Environmental Management
EU Conformity Declaration
Registered & Licensed Supplier / 营业执照
On-site Audited Manufacturer / 实地认证
