The Bolt,shoulder, cataloged under National Stock Number 5306-00-377-5588, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. Government technical data includes 18 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-00-377-5588 |
| Item Name | Bolt,shoulder |
| FSC / FSG | 5306 / 53 — Bolts |
| Status | ACTIVE |
| Head Height | 0.250 INCHES MINIMUM AND 0.281 INCHES MAXIMUM IN |
| Fastener Length | 2.344 INCHES MINIMUM AND 2.406 INCHES MAXIMUM IN |
| Shoulder Length | 1.140 INCHES MINIMUM AND 1.156 INCHES MAXIMUM FIRST SHOULDER IN |
| Distance From Centerline to Flat | 0.445 INCHES NOMINAL IN |
| Shoulder Diameter | 0.876 INCHES MINIMUM AND 0.878 INCHES MAXIMUM FIRST SHOULDER IN |
| Thread Length | 1.062 INCHES MINIMUM IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Hardness Rating | 92.6 ROCKWELL C MINIMUM AND 98.0 ROCKWELL C MAXIMUM OVERALL |
| Material Document and Classification | QQ-S-634 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.750 INCHES IN |
| Head Style | DEE CHAMFER |
| Thread Direction | RIGHT-HAND |
| Nonstandard Thread Pitch Diameter | +0.7044 TO 0.7084 INCHES IN |
| Minimum Yield Strength | 35000 POUNDS PER SQUARE INCH LBS |
| Thread Quantity Per Inch | 16 |
| Material | STEEL COMP 1035 OVERALL |
| Thread Series Designator | UNF |
| Head Diameter | 1.312 INCHES MINIMUM AND 1.374 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 568495 | 3/9 Design control — primary reference Chrysler Realty Company Llc Dba Daimler Chrysler |
| 36030 | 5/9 Secondary reference Alliedsignal Inc Alliedsignal Braking Systems-Wheel End Products |
| 21005B | 5/2 Secondary reference U.S. Government activity |
| S10-0-21005B | 5/2 Secondary reference U.S. Government activity |
NSN 5306-00-377-5588 is a Bolt,shoulder, classified under FSC 5306, Bolts. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 5310-01-513-7602, 4720-01-551-3357. Verify interchangeability with system specifications before substitution.
Key specifications for 5306-00-377-5588: Head Height: 0.250 INCHES MINIMUM AND 0.281 INCHES MAXIMUM IN; Fastener Length: 2.344 INCHES MINIMUM AND 2.406 INCHES MAXIMUM IN; Shoulder Length: 1.140 INCHES MINIMUM AND 1.156 INCHES MAXIMUM FIRST SHOULDER IN; Distance From Centerline to Flat: 0.445 INCHES NOMINAL IN. 18 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.