The Screw,machine, cataloged under National Stock Number 5305-00-151-0027, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. Government technical data includes 18 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 11 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-00-151-0027 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Screw Surface Treatment | CADMIUM AND CHROMATE |
| Fastener Length | 1.500 INCHES NOMINAL IN |
| Screw Material Document and Classification | SAE ASSN STD SINGLE MATERIAL RESPONSE |
| Thread Length | 1.389 INCHES MINIMUM AND 1.500 INCHES MAXIMUM IN |
| Hardness Rating | 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM |
| Nominal Thread Diameter | 0.312 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Departure From Cited Designator | AS MODIFIED BY MATERIAL AND METALLIC HARDNESS RATING AND TENSILE STRENGTH AND FASTENER LENGTH |
| Nondefinitive Spec/std Data | 3 TYPE AND 3C STYLE |
| Screw Material | STEEL COMP 2330 |
| 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 | 18 |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.556 INCHES MINIMUM AND 0.635 INCHES MAXIMUM IN |
| Screw Surface Treatment Document and Classification | QQ-P-416,TYPE 2,CLASS 3 FED SPEC ALL TREATMENT RESPONSES |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| AN507 | 5/9 Secondary reference Desco Corp Marsh Bellofram Div |
| AN507H518R24 | 2/2 Government specification standardization U.S. Government activity |
| FFS92TYPE3STYLE3C | 4/1 Identification reference U.S. Government activity |
NSN 5305-00-151-0027 is a Screw,machine, classified under FSC 5305, Screws. Status: active.
11 possible matches (shared part number, not a government interchangeability claim): 5305-00-151-3236, 5305-00-151-3237, 5305-00-151-3238. Verify interchangeability with system specifications before substitution.
Key specifications for 5305-00-151-0027: Screw Surface Treatment: CADMIUM AND CHROMATE; Fastener Length: 1.500 INCHES NOMINAL IN; Screw Material Document and Classification: SAE ASSN STD SINGLE MATERIAL RESPONSE; Thread Length: 1.389 INCHES MINIMUM AND 1.500 INCHES MAXIMUM IN. 18 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.