The Bolt,shoulder, cataloged under National Stock Number 5306-00-652-5558, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 19 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-00-652-5558 |
| Primary Part Number | 8403341 |
| Item Name | Bolt,shoulder |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Head Height | 0.250 INCHES NOMINAL IN |
| Fastener Length | 4.875 INCHES NOMINAL IN |
| Shoulder Length | 4.047 INCHES MINIMUM AND 4.062 INCHES MAXIMUM FIRST SHOULDER IN |
| Shoulder Diameter | 0.617 INCHES MINIMUM AND 0.622 INCHES MAXIMUM FIRST SHOULDER IN |
| Thread Length | 0.969 INCHES MINIMUM IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Shank Unthreaded Hole Diameter | 0.140 INCHES NOMINAL FIRST HOLE IN |
| Material Document and Classification | QQ-S-633 CANC FED SPEC ALL MATERIAL RESPONSES OVERALL |
| Nominal Thread Diameter | 0.562 INCHES IN |
| Head Style | ROUND W/WRENCH FLATS |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.812 INCHES NOMINAL IN |
| Surface Treatment | PHOSPHATE OVERALL |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 18 |
| Material | STEEL COMP 1018 OR STEEL COMP 1019 OR STEEL COMP 1020 OR STEEL COMP 1021 OR STEEL COMP 1022 OR STEEL COMP 1524 OR STEEL COMP 1025 OVERALL |
| Thread Series Designator | UNF |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 4.641 INCHES MINIMUM AND 4.656 INCHES MAXIMUM FIRST HOLE IN |
| Head Diameter | 0.938 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 |
|---|---|
| 8403341 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
NSN 5306-00-652-5558 is a Bolt,shoulder, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-652-5558 has 1 manufacturer part number on file: 8403341 (U S Army Tank Automotive Command Amsta-Im-Mm).
1 possible match (shared part number, not a government interchangeability claim): 5995-01-654-2608. Verify interchangeability with system specifications before substitution.
Key specifications for 8403341: Head Height: 0.250 INCHES NOMINAL IN; Fastener Length: 4.875 INCHES NOMINAL IN; Shoulder Length: 4.047 INCHES MINIMUM AND 4.062 INCHES MAXIMUM FIRST SHOULDER IN; Shoulder Diameter: 0.617 INCHES MINIMUM AND 0.622 INCHES MAXIMUM FIRST SHOULDER 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.