The Screw,machine, cataloged under National Stock Number 5305-01-170-5545, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Unison Industries Llc. Government technical data includes 14 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5305-01-170-5545 |
| Primary Part Number | 10-187580 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Unison Industries Llc |
| Status | ACTIVE |
| Head Height | 0.088 INCHES MINIMUM AND 0.102 INCHES MAXIMUM IN |
| Screw Surface Treatment | TIN |
| Fastener Length | 0.156 INCHES MINIMUM AND 0.188 INCHES MAXIMUM IN |
| Thread Length | 0.126 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.164 INCHES IN |
| Head Style | BUTTON |
| Thread Direction | RIGHT-HAND |
| Screw Material | STEEL |
| Internal Drive Style | SLOT |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 32 |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.364 INCHES MINIMUM AND 0.384 INCHES MAXIMUM IN |
| Screw Surface Treatment Document and Classification | 9-807 FSCM 77820 MFR REF 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 |
|---|---|
| 10-187580 PRIMARY | Unison Industries Llc (USA) |
| Reference | Meaning |
|---|---|
| 10-187580 | 5/9 Secondary reference Amphenol Corp Div Amphenol Aerospace Operations |
NSN 5305-01-170-5545 is a Screw,machine, manufactured by Unison Industries Llc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-170-5545 has 1 manufacturer part number on file: 10-187580 (Unison Industries Llc).
Key specifications for 10-187580: Head Height: 0.088 INCHES MINIMUM AND 0.102 INCHES MAXIMUM IN; Screw Surface Treatment: TIN; Fastener Length: 0.156 INCHES MINIMUM AND 0.188 INCHES MAXIMUM IN; Thread Length: 0.126 INCHES NOMINAL IN. 14 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.