The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-688-0781, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Fastener Technology Corp. Government technical data includes 22 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5305-01-688-0781 |
| Primary Part Number | FTH1085-10-3-5 |
| Item Name | Screw,cap,socket Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Fastener Technology Corp |
| Status | ACTIVE |
| Width Across Flats | 0.157 INCHES NOMINAL IN |
| Head Height | 0.187 INCHES NOMINAL IN |
| Fastener Length | 0.884 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE FASTENER |
| Surface Treatment Document and Classification | MIL-A-8625, TYPE I, CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE RING |
| Thread Length | 0.250 INCHES NOMINAL IN |
| Material Document and Classification | MS5731 ASSN STD SINGLE MATERIAL RESPONSE OR AMS5735 ASSN STD SINGLE MATERIAL RESPONSE OR AMS5736 ASSN STD SINGLE MATERIAL RESPONSE OR AMS5737 ASSN STD SINGLE MATERIAL RESPONSE FASTENER |
| Material Document and Classification | QQ-A-225-8 FED SPEC SINGLE MATERIAL RESPONSE RING |
| Material Document and Classification | QQ-W-423, COND B FED SPEC SINGLE MATERIAL RESPONSE OR ASTM-A-313 ASSN STD SINGLE MATERIAL RESPONSE SPRING |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.309 INCHES NOMINAL IN |
| Surface Treatment | PASSIVATE FASTENER |
| Surface Treatment | ANODIZE RING |
| Internal Drive Style | HEXAGON |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 32 |
| Material | STEEL COMP 302 SPRING |
| Material | STEEL CORROSION RESISTING FASTENER |
| Material | ALUMINUM ALLOY 6061 RING |
| Thread Series Designator | UNF |
| 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 |
|---|---|
| FTH1085-10-3-5 PRIMARY | Fastener Technology Corp (USA) |
| Reference | Meaning |
|---|---|
| FTH1085 | D/9 Drawing number reference only Fastener Technology Corp |
NSN 5305-01-688-0781 is a Screw,cap,socket Head, manufactured by Fastener Technology Corp, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-688-0781 has 1 manufacturer part number on file: FTH1085-10-3-5 (Fastener Technology Corp).
Key specifications for FTH1085-10-3-5: Width Across Flats: 0.157 INCHES NOMINAL IN; Head Height: 0.187 INCHES NOMINAL IN; Fastener Length: 0.884 INCHES NOMINAL IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE FASTENER. 22 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.