The Screw,machine, cataloged under National Stock Number 5305-01-137-3936, 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 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-137-3936 |
| Primary Part Number | 2-56X3/16LG |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Allmetal Screw Products Corp |
| Status | ACTIVE |
| Screw Surface Treatment | PASSIVATE |
| Fastener Length | 0.187 INCHES NOMINAL IN |
| Screw Material Document and Classification | ASTM 582 FED SPEC 1ST MATERIAL RESPONSE |
| Thread Length | 0.071 INCHES MINIMUM AND 0.147 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.086 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Screw Material | STEEL COMP 303 OR STEEL COMP 302 OR STEEL COMP 304 OR STEEL COMP 305 OR STEEL COMP 316 |
| Internal Drive Style | CROSS RECESS TYPE 1 |
| Countersink Angle | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 56 |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.150 INCHES MINIMUM AND 0.175 INCHES MAXIMUM IN |
| Screw Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE |
| 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 |
|---|---|
| 2-56X3/16LG PRIMARY | Allmetal Screw Products Corp (USA) |
| Reference | Meaning |
|---|---|
| 2-56X3/16LG | 5/9 Secondary reference Mil-Spec Painting, Inc. |
| 202827-1 | 5/9 Secondary reference Vega Precision Laboratories Inc Sub of Herley Industries Inc |
NSN 5305-01-137-3936 is a Screw,machine, manufactured by Allmetal Screw Products Corp, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-137-3936 has 1 manufacturer part number on file: 2-56X3/16LG (Allmetal Screw Products Corp).
1 possible match (shared part number, not a government interchangeability claim): 5305-01-563-2968. Verify interchangeability with system specifications before substitution.
Key specifications for 2-56X3/16LG: Screw Surface Treatment: PASSIVATE; Fastener Length: 0.187 INCHES NOMINAL IN; Screw Material Document and Classification: ASTM 582 FED SPEC 1ST MATERIAL RESPONSE; Thread Length: 0.071 INCHES MINIMUM AND 0.147 INCHES MAXIMUM 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.