The Screw,shoulder, cataloged under National Stock Number 5305-00-182-9345, is classified within Federal Supply Class 5305 (Screws) 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. 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 | 5305-00-182-9345 |
| Primary Part Number | 667227 |
| Item Name | Screw,shoulder |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| Status | ACTIVE |
| Head Height | 0.120 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN |
| Fastener Length | 1.678 INCHES MINIMUM AND 1.698 INCHES MAXIMUM IN |
| Shoulder Length | 0.490 INCHES MINIMUM AND 0.530 INCHES MAXIMUM FIRST SHOULDER IN |
| Shoulder Diameter | 0.3220 INCHES MINIMUM AND 0.3225 INCHES MAXIMUM FIRST SHOULDER IN |
| Thread Length | 0.606 INCHES MINIMUM AND 0.686 INCHES MAXIMUM IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Shank Unthreaded Hole Diameter | 0.065 INCHES MINIMUM AND 0.072 INCHES MAXIMUM FIRST HOLE IN |
| Criticality Code Justification | AATN |
| Material Document and Classification | AMS 5625 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | FLAT CHAMFER |
| Thread Direction | RIGHT-HAND |
| Internal Drive Style | SLOT |
| Thread Class | 3A A |
| Test Data Document | 81343-AMS 2645 STANDARD (INCLUDES INDUSTRY OR ASSOCIATION STANDARDS, INDIVIDUAL MANUFACTUREER STANDARDS, ETC.). |
| Thread Quantity Per Inch | 28 |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 1.555 INCHES MINIMUM AND 1.565 INCHES MAXIMUM FIRST HOLE IN |
| Head Diameter | 0.384 INCHES MINIMUM AND 0.414 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 | Y |
| Part Number | Manufacturer |
|---|---|
| 667227 PRIMARY | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
NSN 5305-00-182-9345 is a Screw,shoulder, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 5305, Screws. Status: active.
NSN 5305-00-182-9345 has 1 manufacturer part number on file: 667227 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney).
1 possible match (shared part number, not a government interchangeability claim): 2520-00-773-5328. Verify interchangeability with system specifications before substitution.
Key specifications for 667227: Head Height: 0.120 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN; Fastener Length: 1.678 INCHES MINIMUM AND 1.698 INCHES MAXIMUM IN; Shoulder Length: 0.490 INCHES MINIMUM AND 0.530 INCHES MAXIMUM FIRST SHOULDER IN; Shoulder Diameter: 0.3220 INCHES MINIMUM AND 0.3225 INCHES MAXIMUM FIRST SHOULDER IN. 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.