The Screw,cap,hexagon Head, cataloged under National Stock Number 5305-01-236-1672, 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 15 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-236-1672 |
| Primary Part Number | PW37815-9 |
| Item Name | Screw,cap,hexagon Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| Status | ACTIVE |
| Head Height | 0.500 INCHES NOMINAL IN |
| Fastener Length | 4.000 INCHES NOMINAL IN |
| Thread Length | 1.250 INCHES MINIMUM AND 1.450 INCHES MAXIMUM IN |
| Hardness Rating | 35.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL |
| Shank Unthreaded Hole Diameter | 0.125 INCHES NOMINAL FIRST HOLE IN |
| Material Document and Classification | AISI 4140 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.750 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 1.125 INCHES NOMINAL IN |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 10 |
| Material | STEEL COMP 4140 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 3.625 INCHES NOMINAL FIRST HOLE 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 |
|---|---|
| PW37815-9 PRIMARY | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| Reference | Meaning |
|---|---|
| PWA37815-9 | C/1 Advisory reference — outside the item-of-supply concept Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
NSN 5305-01-236-1672 is a Screw,cap,hexagon Head, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-236-1672 has 1 manufacturer part number on file: PW37815-9 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney).
Key specifications for PW37815-9: Head Height: 0.500 INCHES NOMINAL IN; Fastener Length: 4.000 INCHES NOMINAL IN; Thread Length: 1.250 INCHES MINIMUM AND 1.450 INCHES MAXIMUM IN; Hardness Rating: 35.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL. 15 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.