The Bolt,shoulder, cataloged under National Stock Number 5306-00-899-1955, 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 18 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5306-00-899-1955 |
| Primary Part Number | 433879 |
| Item Name | Bolt,shoulder |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| Status | ACTIVE |
| Head Height | 0.209 INCHES MINIMUM AND 0.229 INCHES MAXIMUM IN |
| Fastener Length | 1.810 INCHES MINIMUM AND 1.830 INCHES MAXIMUM IN |
| Shoulder Length | 0.220 INCHES MINIMUM AND 0.240 INCHES MAXIMUM FIRST SHOULDER IN |
| Surface Treatment Document and Classification | AMS 2400 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Shoulder Diameter | 0.392 INCHES MINIMUM AND 0.395 INCHES MAXIMUM FIRST SHOULDER IN |
| Thread Length | 0.890 INCHES MINIMUM AND 0.930 INCHES MAXIMUM IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Hardness Rating | 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL |
| Material Document and Classification | AMS 6322 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.375 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.553 INCHES MINIMUM AND 0.564 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OVERALL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Material | STEEL COMP 8740 OVERALL |
| Thread Series Designator | UNF |
| 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 |
|---|---|
| 433879 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| 433879 PRIMARY | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| 433879 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| Reference | Meaning |
|---|---|
| 433879 | 5/2 Secondary reference U.S. Government activity |
| 433879 | 5/2 Secondary reference U.S. Government activity |
NSN 5306-00-899-1955 is a Bolt,shoulder, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-899-1955 has 3 manufacturer part numbers on file: 433879 (Sps Technologies, Llc Dba PB Fasteners), 433879 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), 433879 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company).
Key specifications for 433879: Head Height: 0.209 INCHES MINIMUM AND 0.229 INCHES MAXIMUM IN; Fastener Length: 1.810 INCHES MINIMUM AND 1.830 INCHES MAXIMUM IN; Shoulder Length: 0.220 INCHES MINIMUM AND 0.240 INCHES MAXIMUM FIRST SHOULDER IN; Surface Treatment Document and Classification: AMS 2400 ASSN STD SINGLE TREATMENT RESPONSE OVERALL. 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.