The Screw,machine, cataloged under National Stock Number 5305-01-187-4697, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Brunson Instrument Company Dba Brunson Instrument Company. Government technical data includes 12 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5305-01-187-4697 |
| Primary Part Number | OF-4-500 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Brunson Instrument Company Dba Brunson Instrument Company |
| Status | ACTIVE |
| Head Height | 0.135 INCHES NOMINAL IN |
| Fastener Length | 0.245 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN |
| Thread Length | 0.195 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.112 INCHES IN |
| Head Style | PAN |
| Thread Direction | RIGHT-HAND |
| Screw Material | COPPER |
| Internal Drive Style | SLOT |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 40 |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.309 INCHES MINIMUM AND 0.312 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 |
|---|---|
| OF-4-500 PRIMARY | Brunson Instrument Company Dba Brunson Instrument Company (USA) |
| Reference | Meaning |
|---|---|
| 0F-4-500 | C/1 Advisory reference — outside the item-of-supply concept Keuffel and Esser Co |
NSN 5305-01-187-4697 is a Screw,machine, manufactured by Brunson Instrument Company Dba Brunson Instrument Company, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-187-4697 has 1 manufacturer part number on file: OF-4-500 (Brunson Instrument Company Dba Brunson Instrument Company).
Key specifications for OF-4-500: Head Height: 0.135 INCHES NOMINAL IN; Fastener Length: 0.245 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN; Thread Length: 0.195 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN; Nominal Thread Diameter: 0.112 INCHES IN. 12 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.