The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-669-0878, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Hansome Energy Systems Inc. Government technical data includes 10 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government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 | 5305-01-669-0878 |
| Primary Part Number | A-445-111PC81 |
| Item Name | Screw,cap,socket Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Hansome Energy Systems Inc |
| Status | ACTIVE |
| Fastener Length | 5.000 INCHES NOMINAL IN |
| Material Document and Classification | FF-S-86 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.500 INCHES IN |
| Head Style | PAN NO. 2 |
| Thread Direction | RIGHT-HAND |
| Surface Treatment | ZINC OVERALL |
| Internal Drive Style | CROSS RECESS TYPE 1 |
| Thread Quantity Per Inch | 13 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| 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 |
|---|---|
| A-445-111PC81 PRIMARY | Hansome Energy Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| A-445-111 | D/9 Drawing number reference only Hansome Energy Systems Inc |
NSN 5305-01-669-0878 is a Screw,cap,socket Head, manufactured by Hansome Energy Systems Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-669-0878 has 1 manufacturer part number on file: A-445-111PC81 (Hansome Energy Systems Inc).
4 possible matches (shared part number, not a government interchangeability claim): 5310-01-669-0890, 5310-01-669-0895, 5310-01-669-0898. Verify interchangeability with system specifications before substitution.
Key specifications for A-445-111PC81: Fastener Length: 5.000 INCHES NOMINAL IN; Material Document and Classification: FF-S-86 FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Nominal Thread Diameter: 0.500 INCHES IN; Head Style: PAN NO. 2. 10 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.