The Bolt,shoulder, cataloged under National Stock Number 5306-00-281-3259, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Fairbanks Morse, Llc. Government technical data includes 19 specifications, cited from the U.S. Government catalog. The record lists 10 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 14 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-00-281-3259 |
| Primary Part Number | 10AF10C1636APC2 |
| Item Name | Bolt,shoulder |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Fairbanks Morse, Llc |
| Status | ACTIVE |
| Head Height | 0.625 INCHES NOMINAL IN |
| Fastener Length | 4.562 INCHES NOMINAL IN |
| Shoulder Length | 2.624 INCHES NOMINAL FIRST SHOULDER IN |
| Distance From Centerline to Flat | 0.688 INCHES NOMINAL IN |
| Shoulder Diameter | 1.312 INCHES NOMINAL FIRST SHOULDER IN |
| Thread Length | 1.032 INCHES MINIMUM IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Hardness Rating | 27.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL |
| Shank Unthreaded Hole Diameter | 0.188 INCHES NOMINAL ALL HOLES IN |
| Material Document and Classification | MIL-S-890 ALLOY 2 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 1.125 INCHES IN |
| Head Style | DEE CHAMFER |
| Thread Direction | RIGHT-HAND |
| Thread Class | 4A A |
| Thread Quantity Per Inch | 12 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNF |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 4.281 INCHES NOMINAL ALL HOLES IN |
| Head Diameter | 1.750 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 10AF10C1636APC2 PRIMARY | Fairbanks Morse, Llc (USA) |
| AFB1638A PRIMARY | Fairbanks Morse, Llc (USA) |
| MAAFB1636PC8 PRIMARY | Fairbanks Morse, Llc (USA) |
| 15AF9B1636PC8 PRIMARY | Fairbanks Morse, Llc (USA) |
| NAFB1638B PRIMARY | Fairbanks Morse, Llc (USA) |
| AFB1638C PRIMARY | Fairbanks Morse, Llc (USA) |
| MAFB1636PC8 PRIMARY | Fairbanks Morse, Llc (USA) |
| 13AF10B1636PC2 PRIMARY | Fairbanks Morse, Llc (USA) |
| 10AF10C1636BPC2 PRIMARY | Fairbanks Morse, Llc (USA) |
| AFB1638B PRIMARY | Fairbanks Morse, Llc (USA) |
| Reference | Meaning |
|---|---|
| 9AF9B1636PC8 | 3/9 Design control — primary reference U.S. Government activity |
| 10AF10C1636BPC2 | 5/9 Secondary reference U.S. Government activity |
| AFC1638A | 5/9 Secondary reference U.S. Government activity |
| 13AF10B1636PC2 | 5/9 Secondary reference U.S. Government activity |
| AFB1638B | 5/9 Secondary reference U.S. Government activity |
| AFB1638C | 5/9 Secondary reference U.S. Government activity |
| MAFB1636PC8 | 5/9 Secondary reference U.S. Government activity |
| 10AF10C1636APC2 | 5/9 Secondary reference U.S. Government activity |
| MAAFB1636PC8 | 5/9 Secondary reference U.S. Government activity |
| 22AF10C1636PC7 | 5/9 Secondary reference U.S. Government activity |
| 7AF9B1636PC8 | 5/9 Secondary reference U.S. Government activity |
| NAFB1638B | 5/9 Secondary reference U.S. Government activity |
| 15AF9B1636PC8 | 5/9 Secondary reference U.S. Government activity |
| 7AF9B1636PC13 | 5/9 Secondary reference U.S. Government activity |
NSN 5306-00-281-3259 is a Bolt,shoulder, manufactured by Fairbanks Morse, Llc, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-281-3259 has 10 manufacturer part numbers on file: 10AF10C1636APC2 (Fairbanks Morse, Llc), AFB1638A (Fairbanks Morse, Llc), MAAFB1636PC8 (Fairbanks Morse, Llc), 15AF9B1636PC8 (Fairbanks Morse, Llc), NAFB1638B (Fairbanks Morse, Llc) and 5 more.
Key specifications for 10AF10C1636APC2: Head Height: 0.625 INCHES NOMINAL IN; Fastener Length: 4.562 INCHES NOMINAL IN; Shoulder Length: 2.624 INCHES NOMINAL FIRST SHOULDER IN; Distance From Centerline to Flat: 0.688 INCHES NOMINAL IN. 19 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.