The Screw,tapping, cataloged under National Stock Number 5305-01-443-8436, 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 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5305-01-443-8436 |
| Primary Part Number | 12377969-1 |
| Item Name | Screw,tapping |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Nonmachine Nominal Thread Diameter | 0.312 INCHES IN |
| Extended Washer Thickness | 0.035 INCHES MINIMUM AND 0.055 INCHES MAXIMUM IN |
| Head Height | 0.264 INCHES NOMINAL IN |
| Fastener Length | 0.470 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | ASTM B633 TY 2 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Extended Washer Diameter | 0.624 INCHES MINIMUM AND 0.676 INCHES MAXIMUM IN |
| Hardness Rating | 45.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM OVERALL |
| Nonmachine Thread Style | DOUBLE FLUTE (TYPE F) |
| Features Provided | CASEHARDENED |
| Head Style | HEXAGON EXTENDED WASHER |
| Width Between Flats | 0.500 INCHES NOMINAL IN |
| Nondefinitive Spec/std Data | F TYPE |
| Surface Treatment | ZINC AND CHROMATE OVERALL |
| Internal Drive Style | W/O INTERNAL DRIVE |
| Material | STEEL COMP 1020 OR STEEL COMP 1021 OR STEEL COMP 1022 OR STEEL COMP 1023 OR STEEL COMP 1524 OVERALL |
| 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 |
|---|---|
| 12377969-1 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| FF-S-107 | 4/1 Identification reference U.S. Government activity |
NSN 5305-01-443-8436 is a Screw,tapping, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-443-8436 has 1 manufacturer part number on file: 12377969-1 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 12377969-1: Nonmachine Nominal Thread Diameter: 0.312 INCHES IN; Extended Washer Thickness: 0.035 INCHES MINIMUM AND 0.055 INCHES MAXIMUM IN; Head Height: 0.264 INCHES NOMINAL IN; Fastener Length: 0.470 INCHES NOMINAL IN. 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.