The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-183-8727, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Caterpillar Inc Div Caterpillar Defense. Government technical data includes 14 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 | 5305-01-183-8727 |
| Primary Part Number | 4L1507 |
| Item Name | Screw,cap,socket Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Caterpillar Inc Div Caterpillar Defense |
| Status | ACTIVE |
| Width Across Flats | 7.92 MILLIMETERS NOMINAL MM |
| Head Height | 9.52 MILLIMETERS NOMINAL MM |
| Fastener Length | 22.22 MILLIMETERS NOMINAL MM |
| Thread Length | 20.1 MILLIMETERS NOMINAL MM |
| Material Document and Classification | IE2243 FSCM 11083 MFR REF SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.375 INCHES IN |
| Head Style | FLAT CHAMFER |
| Thread Direction | RIGHT-HAND |
| Internal Drive Style | HEXAGON |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNF |
| Head Diameter | 14.27 MILLIMETERS NOMINAL MM |
| 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 |
|---|---|
| 4L1507 PRIMARY | Caterpillar Inc Div Caterpillar Defense (USA) |
NSN 5305-01-183-8727 is a Screw,cap,socket Head, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-183-8727 has 1 manufacturer part number on file: 4L1507 (Caterpillar Inc Div Caterpillar Defense).
Key specifications for 4L1507: Width Across Flats: 7.92 MILLIMETERS NOMINAL MM; Head Height: 9.52 MILLIMETERS NOMINAL MM; Fastener Length: 22.22 MILLIMETERS NOMINAL MM; Thread Length: 20.1 MILLIMETERS NOMINAL MM. 14 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.