The Screw,shoulder, cataloged under National Stock Number 5305-00-033-4911, 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 16 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-00-033-4911 |
| Primary Part Number | 237240 |
| Item Name | Screw,shoulder |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| Status | ACTIVE |
| Head Height | 0.162 INCHES MINIMUM AND 0.182 INCHES MAXIMUM IN |
| Fastener Length | 3.040 INCHES MINIMUM AND 3.060 INCHES MAXIMUM IN |
| Shoulder Length | 2.340 INCHES MINIMUM AND 2.360 INCHES MAXIMUM FIRST SHOULDER IN |
| Shoulder Diameter | 0.309 INCHES MINIMUM AND 0.312 INCHES MAXIMUM FIRST SHOULDER IN |
| Thread Length | 0.700 INCHES MAXIMUM IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Hardness Rating | 30.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | FLAT CHAMFER |
| Thread Direction | RIGHT-HAND |
| Internal Drive Style | SLOT |
| Thread Class | 1A A |
| Thread Quantity Per Inch | 28 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNF |
| Head Diameter | 0.590 INCHES MINIMUM AND 0.622 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 | X |
| Part Number | Manufacturer |
|---|---|
| 237240 PRIMARY | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
NSN 5305-00-033-4911 is a Screw,shoulder, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 5305, Screws. Status: active.
NSN 5305-00-033-4911 has 1 manufacturer part number on file: 237240 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney).
Key specifications for 237240: Head Height: 0.162 INCHES MINIMUM AND 0.182 INCHES MAXIMUM IN; Fastener Length: 3.040 INCHES MINIMUM AND 3.060 INCHES MAXIMUM IN; Shoulder Length: 2.340 INCHES MINIMUM AND 2.360 INCHES MAXIMUM FIRST SHOULDER IN; Shoulder Diameter: 0.309 INCHES MINIMUM AND 0.312 INCHES MAXIMUM FIRST SHOULDER IN. 16 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.