The Bolt,shoulder, cataloged under National Stock Number 5306-01-414-6499, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Sps Technologies, Llc Dba PB Fasteners. Government technical data includes 24 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-414-6499 |
| Primary Part Number | A55B32725-17 |
| Item Name | Bolt,shoulder |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Sps Technologies, Llc Dba PB Fasteners |
| Status | ACTIVE |
| Head Height | 0.280 INCHES MINIMUM AND 0.295 INCHES MAXIMUM IN |
| Fastener Length | 2.520 INCHES NOMINAL IN |
| Shoulder Length | 1.890 INCHES NOMINAL FIRST SHOULDER IN |
| Surface Treatment Document and Classification | QQ-S-365, TYPE 3, GRADE B FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Precious Material | SILVER |
| Shoulder Diameter | 0.7460 INCHES MINIMUM AND 0.7470 INCHES MAXIMUM FIRST SHOULDER IN |
| Thread Length | 0.630 INCHES NOMINAL IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Hardness Rating | 45.0 ROCKWELL C MINIMUM OVERALL |
| Shank Unthreaded Hole Diameter | 0.136 INCHES MINIMUM AND 0.146 INCHES MAXIMUM THREADS IN |
| Material Document and Classification | AMS 5844 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.625 INCHES IN |
| Head Style | HEXAGON COUNTERSUNK UNDERCUT |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 1.052 INCHES MINIMUM AND 1.064 INCHES MAXIMUM IN |
| Bottom Countersink Diameter | 0.910 INCHES NOMINAL IN |
| Surface Treatment | SILVER OVERALL |
| Precious Material and Location | OVERALL SILVER |
| Countersink Angle | 45.0 DEGREES NOMINAL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 18 |
| Material | COBALT COMP MP-35-N OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 2.328 INCHES NOMINAL THREADS 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 |
|---|---|
| A55B32725-17 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| Reference | Meaning |
|---|---|
| A55B32725-17 | 5/9 Secondary reference Northrop Grumman Systems Corporation |
| A55B32725-17 | C/1 Advisory reference — outside the item-of-supply concept Northrop Grumman Systems Corporation |
NSN 5306-01-414-6499 is a Bolt,shoulder, manufactured by Sps Technologies, Llc Dba PB Fasteners, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-414-6499 has 1 manufacturer part number on file: A55B32725-17 (Sps Technologies, Llc Dba PB Fasteners).
Key specifications for A55B32725-17: Head Height: 0.280 INCHES MINIMUM AND 0.295 INCHES MAXIMUM IN; Fastener Length: 2.520 INCHES NOMINAL IN; Shoulder Length: 1.890 INCHES NOMINAL FIRST SHOULDER IN; Surface Treatment Document and Classification: QQ-S-365, TYPE 3, GRADE B FED SPEC SINGLE TREATMENT RESPONSE OVERALL. 24 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.