The Bolt,shoulder, cataloged under National Stock Number 5306-00-425-8437, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney. Government technical data includes 20 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-00-425-8437 |
| Primary Part Number | 4059357 |
| Item Name | Bolt,shoulder |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| Status | ACTIVE |
| Head Height | 0.125 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN |
| Fastener Length | 2.530 INCHES MINIMUM AND 2.570 INCHES MAXIMUM IN |
| Shoulder Length | 2.220 INCHES MINIMUM AND 2.240 INCHES MAXIMUM FIRST SHOULDER IN |
| Surface Treatment Document and Classification | AMS 2406 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Shoulder Diameter | 0.2494 INCHES MINIMUM AND 0.2497 INCHES MAXIMUM FIRST SHOULDER IN |
| Thread Length | 0.233 INCHES MINIMUM AND 0.313 INCHES MAXIMUM IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Hardness Rating | 24.0 ROCKWELL C MINIMUM AND 35.0 ROCKWELL C MAXIMUM OVERALL |
| Material Document and Classification | AMS 5731 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Head Style | SQUARE |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.350 INCHES MINIMUM AND 0.390 INCHES MAXIMUM IN |
| Surface Treatment | CHROMIUM OVERALL |
| Minimum Tensile Strength | 130000 POUNDS PER SQUARE INCH LBS |
| Minimum Yield Strength | 85000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Material | IRON ALLOY 660 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| 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 |
|---|---|
| 4059357 PRIMARY | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| Reference | Meaning |
|---|---|
| 4018048 | 5/9 Secondary reference Turbo Power & Marine System Inc Sub of United Technologies Corp |
| 4059357 | 5/9 Secondary reference U.S. Government activity |
| 4018048 | 5/9 Secondary reference Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| 4059357 | 5/9 Secondary reference Turbo Power & Marine System Inc Sub of United Technologies Corp |
NSN 5306-00-425-8437 is a Bolt,shoulder, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-425-8437 has 1 manufacturer part number on file: 4059357 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney).
Key specifications for 4059357: Head Height: 0.125 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN; Fastener Length: 2.530 INCHES MINIMUM AND 2.570 INCHES MAXIMUM IN; Shoulder Length: 2.220 INCHES MINIMUM AND 2.240 INCHES MAXIMUM FIRST SHOULDER IN; Surface Treatment Document and Classification: AMS 2406 ASSN STD SINGLE TREATMENT RESPONSE OVERALL. 20 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.