The Setscrew, cataloged under National Stock Number 5305-00-285-4687, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Hall and Watts Defence Optics Limited. Government technical data includes 16 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-00-285-4687 |
| Primary Part Number | 085-082.109-062 |
| Item Name | Setscrew |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Hall and Watts Defence Optics Limited |
| Status | ACTIVE |
| Width Across Flats | 0.035 INCHES MINIMUM AND 0.036 INCHES MAXIMUM IN |
| Fastener Length | 0.146 INCHES MINIMUM AND 0.166 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-416,TY 1,CL 3 FED SPEC 1ST TREATMENT RESPONSE OR QQ-Z-325,TY 1,CL 3 FED SPEC 2ND TREATMENT RESPONSE OVERALL |
| Thread Length | 0.166 INCHES MAXIMUM IN |
| Hardness Rating | 45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM OVERALL |
| Material Document and Classification | 66 FED STD ALL MATERIAL RESPONSES OVERALL |
| Nominal Thread Diameter | 0.086 INCHES IN |
| Head Style | HEADLESS (SETSCREW) |
| Thread Direction | RIGHT-HAND |
| Point Style | CONE |
| Surface Treatment | CADMIUM OR ZINC OVERALL |
| Internal Drive Style | HEXAGON |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 56 |
| Material | STEEL COMP 4037 OR STEEL COMP 4137 OR STEEL COMP 4140 OR STEEL COMP 8630 OR STEEL COMP 8740 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 |
|---|---|
| 085-082.109-062 | Hall and Watts Defence Optics Limited (GBR) |
| 588608 | Army Weapons Command Attn Amswe-Ree-S (USA) |
| Reference | Meaning |
|---|---|
| 085-082.109-062 | 5/1 Secondary reference Hall & Watts Australia Pty Ltd |
| FFS103TYPE3STYLE2 | 4/1 Identification reference U.S. Government activity |
NSN 5305-00-285-4687 is a Setscrew, manufactured by Hall and Watts Defence Optics Limited, classified under FSC 5305, Screws. Status: active.
NSN 5305-00-285-4687 has 2 manufacturer part numbers on file: 085-082.109-062 (Hall and Watts Defence Optics Limited), 588608 (Army Weapons Command Attn Amswe-Ree-S).
Key specifications for 085-082.109-062: Width Across Flats: 0.035 INCHES MINIMUM AND 0.036 INCHES MAXIMUM IN; Fastener Length: 0.146 INCHES MINIMUM AND 0.166 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-416,TY 1,CL 3 FED SPEC 1ST TREATMENT RESPONSE OR QQ-Z-325,TY 1,CL 3 FED SPEC 2ND TREATMENT RESPONSE OVERALL; Thread Length: 0.166 INCHES MAXIMUM IN. 16 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.