The Screw,machine, cataloged under National Stock Number 5305-00-054-6973, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Reliance Comm/tec Corp Lorain Products Div. Government technical data includes 13 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-00-054-6973 |
| Primary Part Number | 188UC |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Reliance Comm/tec Corp Lorain Products Div |
| Status | ACTIVE |
| Head Height | 0.102 INCHES MINIMUM AND 0.114 INCHES MAXIMUM IN |
| Screw Surface Treatment | DICHROMATE ZINC |
| Fastener Length | 0.375 INCHES NOMINAL IN |
| Thread Length | 0.375 INCHES MINIMUM IN |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Head Style | BINDING |
| Thread Direction | RIGHT-HAND |
| Screw Material | STEEL |
| Internal Drive Style | SLOT |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 32 |
| Thread Series Designator | UNF |
| Head Diameter | 0.378 INCHES MINIMUM AND 0.399 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 |
|---|---|
| 188UC PRIMARY | Reliance Comm/tec Corp Lorain Products Div (USA) |
NSN 5305-00-054-6973 is a Screw,machine, manufactured by Reliance Comm/tec Corp Lorain Products Div, classified under FSC 5305, Screws. Status: active.
NSN 5305-00-054-6973 has 1 manufacturer part number on file: 188UC (Reliance Comm/tec Corp Lorain Products Div).
Key specifications for 188UC: Head Height: 0.102 INCHES MINIMUM AND 0.114 INCHES MAXIMUM IN; Screw Surface Treatment: DICHROMATE ZINC; Fastener Length: 0.375 INCHES NOMINAL IN; Thread Length: 0.375 INCHES MINIMUM IN. 13 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.