Find Your DIN 931 Specification
Select a material group to explore DIN 931 partial-thread hex bolts. Each row matches a thread size, head marking and finish with its length options.
All dimensions are in millimetres. Match the material, thread, head marking and length when requesting a quote. On mobile, swipe a table sideways to see all columns.
304 Stainless Steel · 543 catalogue items
| Thread diameter × pitch |
Head marking | Thread / finish | Length options (mm) |
|---|---|---|---|
| M6 × 1 | A2-70 THE | Partial thread | 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 95, 100, 110, 120, 130, 140, 145, 150 |
| M8 × 1.25 | A2-70 THE | Partial thread | 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 95, 100, 110, 120, 130, 140, 150, 160, 170, 180, 190, 200, 210, 220, 230, 240, 250, 260, 270, 280, 290, 300 |
| M8 × 1.25 | A2-70 THE | Partial thread · Wax-treated | 270 |
| M10 × 1.5 | A2-70 THE | Partial thread | 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 95, 100, 110, 120, 130, 140, 150, 160, 170, 180, 190, 200, 210, 220, 230, 240, 250, 260, 270, 280, 290, 300 |
| M12 × 1.75 | A2-70 THE | Partial thread | 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 95, 100, 110, 120, 130, 140, 150, 160, 170, 180, 190, 200, 210, 220, 230, 240, 250, 260, 270, 280, 290, 300 |
| M12 × 1.75 | A2-80 THE | Partial thread | 65 |
| M14 × 2 | A2-70 THE | Partial thread | 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 95, 100, 110, 120, 130, 140, 150, 160, 170, 180, 190, 200, 210, 220, 230, 240, 250, 260, 270, 280, 290, 300 |
| M16 × 2 | A2-70 THE | Partial thread | 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 95, 100, 105, 110, 115, 120, 130, 140, 150, 160, 170, 180, 190, 200, 210, 220, 230, 240, 250, 260, 270, 280, 290, 300 |
| M16 × 2 | A2-70 THE | Partial thread Special thread length — confirm |
105, 115, 125, 135, 145 |
| M16 × 2 | A2-80 THE | Partial thread | 60, 65, 75, 80, 85, 90 |
| M20 × 2.5 | A2-70 THE | Partial thread | 55, 60, 65, 70, 75, 80, 85, 90, 95, 100, 110, 120, 130, 140, 150, 160, 170, 180, 185, 190, 200, 210, 220, 230, 240, 250 |
| M20 × 2.5 | A2-70 THE | Partial thread Special thread length — confirm |
105, 115, 125, 135, 145 |
| M22 × 2.5 | A2-70 THE | Partial thread | 70, 75, 80, 85, 90, 100, 110, 120, 130, 140, 150, 160, 170, 180, 190, 200, 210, 220, 230, 240, 250 |
| M24 × 3 | A2-70 THE | Partial thread | 60, 65, 70, 75, 80, 85, 90, 95, 100, 105, 110, 120, 130, 140, 150, 160, 165, 170, 180, 190, 200, 210, 220, 230, 240, 250 |
| M24 × 3 | A2-70 THE | Partial thread Special thread length — confirm |
105, 115, 125, 135, 145, 155 |
| M27 × 3 | A2-50 THE | Partial thread | 150 |
| M27 × 3 | A2-70 TonG | Partial thread | 70, 75, 80, 90, 95, 100, 105, 110, 115, 120, 125, 130, 135, 140, 145, 150, 160, 170, 180, 190, 200, 210, 220, 225, 230, 240, 250, 260, 270, 280, 290, 300 |
| M30 × 3.5 | A2-50 THE | Partial thread | 130 |
| M30 × 3.5 | A2-70 TonG | Partial thread | 80, 85, 90, 95, 100, 105, 110, 115, 120, 125, 130, 135, 140, 145, 150, 155, 160, 170, 180, 190, 200, 210, 220, 230, 240, 250, 260, 270, 280, 290, 300 |
| M33 × 3.5 | A2-70 THE | Partial thread | 380 |
| M33 × 3.5 | A2-70 TonG | Partial thread | 80, 85, 90, 95, 100, 110, 120, 130, 140, 150, 155, 160, 170, 180, 190, 200, 210, 220, 230, 240, 250, 260, 270, 280, 290, 300 |
| M36 × 4 | A2-70 TonG | Partial thread | 80, 85, 90, 95, 100, 110, 120, 130, 140, 150, 160, 170, 180, 190, 200, 210, 220, 230, 240, 250, 260, 270, 280, 290, 300, 370 |
| M39 × 4 | A2-50/TONG | Partial thread | 100, 110, 120, 130, 140, 150, 160, 170, 180, 190, 200, 210, 220, 230, 240, 250, 260, 270, 280, 290, 300, 310, 320, 330, 340, 350 |
| M42 × 4.5 | A2-50/TONG | Partial thread | 100, 110, 120, 130, 140, 150, 160, 170, 180, 190, 200, 210, 220, 230, 240, 250, 260, 270, 280, 290, 300, 310, 320, 330, 340, 350 |
| M45 × 4.5 | A2-50/TONG | Partial thread | 100, 110, 120, 130, 140, 150, 160, 170, 180, 190, 200, 210, 220, 230, 240, 250, 260, 270, 280, 290, 300, 310, 320, 330, 340, 350 |
| M48 × 5 | A2-50/TONG | Partial thread | 100, 110, 120, 130, 140, 150, 160, 170, 180, 190, 200, 210, 220, 230, 240, 250, 260, 270, 280, 290, 300, 310, 320, 330, 340, 350 |
316 Stainless Steel · 473 catalogue items
| Thread diameter × pitch |
Head marking | Thread / finish | Length options (mm) |
|---|---|---|---|
| M6 × 1 | A4-70 THE | Partial thread | 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 100, 110, 120, 130, 140, 150 |
| M6 × 1 | A4-80 THE | Partial thread | 30, 35, 40, 45, 50, 55, 60, 65 |
| M8 × 1.25 | A4-70 THE | Partial thread | 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 95, 100, 110, 120, 130, 140, 150, 160, 170, 180, 190, 200, 210, 220, 230, 240, 250, 260, 270, 280, 290, 300 |
| M8 × 1.25 | A4-80 THE | Partial thread | 35, 40, 45, 50, 55, 60, 70, 80, 110, 120, 140, 160, 170, 180, 190, 200 |
| M10 × 1.5 | A4-70 THE | Partial thread | 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 95, 100, 110, 120, 130, 140, 150, 160, 170, 180, 190, 200, 210, 220, 230, 240, 250, 260, 270, 280, 290, 300 |
| M10 × 1.5 | A4-80 THE | Partial thread | 40, 45, 50, 60, 70, 75, 80, 90, 100, 140 |
| M12 × 1.75 | A4-70 THE | Partial thread | 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 95, 100, 110, 120, 130, 140, 150, 160, 170, 180, 190, 200, 210, 220, 230, 240, 250, 260, 270, 280, 290, 300 |
| M12 × 1.75 | A4-80 THE | Partial thread | 45, 50, 55, 60, 65, 70, 75, 80, 90, 100, 110, 120, 130, 140, 150 |
| M14 × 2 | A4-70 THE | Partial thread | 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 95, 100, 110, 120, 130, 140, 150, 160, 170, 180, 190, 200, 210, 220, 230, 240, 250, 260, 270, 280, 290, 300 |
| M14 × 2 | A4-80 THE | Partial thread | 60, 70, 80, 90 |
| M16 × 2 | A4-70 THE | Partial thread | 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 95, 100, 105, 110, 120, 130, 135, 140, 150, 160, 170, 180, 190, 200, 210, 220, 230, 240, 250, 260, 270, 280, 290, 300 |
| M16 × 2 | A4-80 THE | Partial thread | 55, 60, 65, 70, 75, 80, 85, 90, 100, 110, 120, 165, 180, 190 |
| M20 × 2.5 | A4-70 THE | Partial thread | 60, 65, 70, 75, 80, 85, 90, 95, 100, 110, 120, 130, 140, 150, 160, 170, 180, 190, 200 |
| M20 × 2.5 | A4-80 THE | Partial thread | 60, 70, 75, 80, 85, 90, 100, 110, 120, 160, 170, 190 |
| M22 × 2.5 | A4-70 THE | Partial thread | 70, 75, 80, 85, 90, 100, 110, 120, 130, 140, 150, 160, 170, 180, 190, 200, 210, 220, 230, 240, 250 |
| M24 × 3 | A4-70 THE | Partial thread | 70, 80, 85, 90, 100, 105, 110, 115, 120, 130, 140, 150, 160, 170, 180, 190, 200, 210, 220, 230, 240, 250 |
| M24 × 3 | A4-80 THE | Partial thread | 90, 100, 110 |
| M27 × 3 | A4-70 TonG | Partial thread | 80, 85, 90, 95, 100, 105, 110, 115, 120, 125, 130, 135, 140, 150, 160, 170, 180, 190, 200, 210, 220, 230, 240, 250, 260, 270, 280, 290, 300 |
| M27 × 3 | A4-80 TonG | Partial thread | 140 |
| M30 × 3.5 | A4-70 TonG | Partial thread | 80, 85, 90, 95, 100, 105, 110, 120, 125, 130, 135, 140, 150, 160, 170, 180, 190, 200, 210, 220, 230, 240, 250, 260, 270, 280, 290, 300 |
| M30 × 3.5 | A4-80 TonG | Partial thread · Supplier wash finish Thread length 75–82 mm |
135 |
| M33 × 3.5 | A4-70 TonG | Partial thread | 80, 85, 90, 95, 100, 110, 120, 130, 140, 150, 160, 170, 180, 190, 200, 210, 220, 230, 240, 250, 260, 270, 280, 290, 300 |
| M36 × 4 | A4-70 TonG | Partial thread | 95, 100, 110, 120, 130, 140, 150, 160, 170, 180, 190, 200, 210, 220, 230, 240, 250 |
| M39 × 4 | A4-50/TONG | Partial thread | 150, 220 |
| M39 × 4 | A4-70 TonG | Partial thread | 180 |
| M42 × 4.5 | A4-50/TONG | Partial thread DIN 931:1987 catalogue designation |
250 |
| M45 × 4.5 | A4-50/TONG | Partial thread DIN 931:1987 catalogue designation |
210 |
| M48 × 5 | A4-50/TONG | Partial thread DIN 931:1987 catalogue designation |
280 |
316L (Ni10) Stainless Steel · 63 catalogue items
| Thread diameter × pitch |
Head marking | Thread / finish | Length options (mm) |
|---|---|---|---|
| M8 × 1.25 | A4L-80 THE | Partial thread | 30 |
| M10 × 1.5 | A4L-80 THE | Partial thread | 95 |
| M16 × 2 | A4-70 THE | Partial thread | 60, 70, 75, 80, 85, 110, 120, 150 |
| M20 Pitch: confirm |
A4-70 THE | Partial thread Hot-forged |
190 |
| M20 × 2.5 | A4-70 THE | Partial thread | 75 |
| M24 × 3 | A4-70 THE | Partial thread | 85, 110, 160 |
| M24 × 3 | A4L-80 THE | Partial thread | 110 |
| M27 × 3 | A4-70 TonG | Partial thread | 105, 115, 125, 135, 145 |
| M27 × 3 | A4L-80 TonG | Partial thread | 90, 95, 100, 105, 110, 115, 120, 125, 130, 135, 140, 145, 150, 160, 170, 180, 190, 200 |
| M30 × 3.5 | A4-70 TonG | Partial thread | 105, 115, 125, 135, 145 |
| M30 × 3.5 | A4L-80 TonG | Partial thread | 90, 95, 100, 105, 110, 115, 120, 125, 130, 135, 140, 145, 150, 160, 170, 180, 190, 200 |
Specify the Thread Length You Need
DIN 931 catalogue items include partial-thread bolts with different lengths and head markings. Special thread-length items are identified in the tables. Include your required threaded length or drawing when this dimension matters to your assembly.
Fast Dispatch for Stocked Items
Items available in Tongming stock can usually be dispatched in around 3 days. Stock availability, quantities and dispatch timing are confirmed with your quotation.
Send Your Specification
Please include DIN 931, material, diameter × pitch × length, head marking or property class, and quantity. You can attach drawings, packaging requirements and inspection requirements through our enquiry form.
Fastener supply experience since 2005. Tongming provides specification matching and competitive quotations from Nanjing.
Catalogue listing does not indicate live stock. For the M20 × 190 hot-forged item, the source does not specify the pitch; please confirm it with your enquiry.
Product photos illustrate the series. Head markings and finish vary by item.
