The Screw,cap,hexagon Head, cataloged under National Stock Number 5305-01-383-4089, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 19 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 | 5305-01-383-4089 |
| Primary Part Number | 12387152-8L |
| Item Name | Screw,cap,hexagon Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Head Height | 0.163 INCHES NOMINAL IN |
| Fastener Length | 1.000 INCHES NOMINAL IN |
| Thread Length | 0.750 INCHES MINIMUM AND 1.000 INCHES MAXIMUM IN |
| Hardness Rating | 40.0 ROCKWELL C MINIMUM AND 48.0 ROCKWELL C MAXIMUM THREADS |
| Material Document and Classification | ASTM F593 ASSN STD SINGLE MATERIAL RESPONSE FASTENER |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Features Provided | FINISHED HEAD |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.437 INCHES NOMINAL IN |
| Locking Feature | PATCH OR STRIP THREADS |
| Surface Treatment | PASSIVATE FASTENER |
| Minimum Tensile Strength | 180000 POUNDS PER SQUARE INCH LBS |
| Minimum Yield Strength | 140000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 20 |
| Material | PLASTIC POLYAMIDE NYLON LOCKING FEATURE |
| Material | STEEL COMP 431 FASTENER |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| 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 |
|---|---|
| 12387152-8L PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
NSN 5305-01-383-4089 is a Screw,cap,hexagon Head, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-383-4089 has 1 manufacturer part number on file: 12387152-8L (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 12387152-8L: Head Height: 0.163 INCHES NOMINAL IN; Fastener Length: 1.000 INCHES NOMINAL IN; Thread Length: 0.750 INCHES MINIMUM AND 1.000 INCHES MAXIMUM IN; Hardness Rating: 40.0 ROCKWELL C MINIMUM AND 48.0 ROCKWELL C MAXIMUM THREADS. 19 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.