The Screw,machine, cataloged under National Stock Number 5305-01-305-0288, 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 12 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5305-01-305-0288 |
| Primary Part Number | A1BMT5312G |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Allmetal Screw Products Corp |
| Status | ACTIVE |
| Head Height | 0.067 INCHES MINIMUM AND 0.078 INCHES MAXIMUM IN |
| Fastener Length | 0.375 INCHES NOMINAL IN |
| Thread Length | 0.339 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.099 INCHES IN |
| Head Style | PAN |
| Thread Direction | RIGHT-HAND |
| Screw Material | STEEL COMP 302 OR STEEL COMP 302B OR STEEL COMP 303 OR STEEL COMP 303 PLUS X OR STEEL COMP 303SE OR STEEL COMP 303CU OR STEEL COMP 303MA OR STEEL COMP 304 OR STEEL COMP 304L |
| Internal Drive Style | CROSS RECESS TYPE 1 |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 56 |
| Thread Series Designator | UNF |
| Head Diameter | 0.169 INCHES MINIMUM AND 0.187 INCHES MAXIMUM 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 |
|---|---|
| 3-56UNF2A-375L,RD-R-TYPE18-8SST | Allmetal Screw Products Corp (USA) |
| A1BMT5312G PRIMARY | Allmetal Screw Products Corp (USA) |
| Reference | Meaning |
|---|---|
| 3-56UNF2A,.375L | C/1 Advisory reference — outside the item-of-supply concept Allmetal Screw Products Corp |
NSN 5305-01-305-0288 is a Screw,machine, manufactured by Allmetal Screw Products Corp, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-305-0288 has 2 manufacturer part numbers on file: 3-56UNF2A-375L,RD-R-TYPE18-8SST (Allmetal Screw Products Corp), A1BMT5312G (Allmetal Screw Products Corp).
Key specifications for A1BMT5312G: Head Height: 0.067 INCHES MINIMUM AND 0.078 INCHES MAXIMUM IN; Fastener Length: 0.375 INCHES NOMINAL IN; Thread Length: 0.339 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN; Nominal Thread Diameter: 0.099 INCHES IN. 12 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.