The Setscrew, cataloged under National Stock Number 5305-00-372-9989, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Allmetal Screw Products Corp. Government technical data includes 17 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5305-00-372-9989 |
| Primary Part Number | 1-72UNF3A1-8 |
| Item Name | Setscrew |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Allmetal Screw Products Corp |
| Status | ACTIVE |
| Spline Minor Diameter | 0.025 INCHES MINIMUM AND 0.026 INCHES MAXIMUM IN |
| Fastener Length | 0.115 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN |
| Spline Width | 0.011 INCHES MINIMUM AND 0.012 INCHES MAXIMUM IN |
| Thread Length | 0.115 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN |
| Hardness Rating | 25.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM OVERALL |
| Material Document and Classification | 66 FED STD ALL MATERIAL RESPONSES OVERALL |
| Spline Major Diameter | 0.034 INCHES MINIMUM AND 0.035 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.073 INCHES IN |
| Head Style | HEADLESS (SETSCREW) |
| Thread Direction | RIGHT-HAND |
| Point Style | CUP |
| Surface Treatment | PASSIVATE OVERALL |
| Internal Drive Style | FOUR SPLINE |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 72 |
| Material | STEEL COMP 302 OR STEEL COMP 303 OR STEEL COMP 304 OR STEEL COMP 316 OVERALL |
| Thread Series Designator | UNF |
| 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 |
|---|---|
| 1-72UNF3A1-8 PRIMARY | Allmetal Screw Products Corp (USA) |
| Reference | Meaning |
|---|---|
| 035224-104 | 7/2 Vendor item drawing reference U.S. Government activity |
NSN 5305-00-372-9989 is a Setscrew, manufactured by Allmetal Screw Products Corp, classified under FSC 5305, Screws. Status: active.
NSN 5305-00-372-9989 has 1 manufacturer part number on file: 1-72UNF3A1-8 (Allmetal Screw Products Corp).
Key specifications for 1-72UNF3A1-8: Spline Minor Diameter: 0.025 INCHES MINIMUM AND 0.026 INCHES MAXIMUM IN; Fastener Length: 0.115 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN; Spline Width: 0.011 INCHES MINIMUM AND 0.012 INCHES MAXIMUM IN; Thread Length: 0.115 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN. 17 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.