The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-293-2887, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Bristol, Inc. Dba Remote Automation Solutions Div Remote Automation Solutions. Government technical data includes 18 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-293-2887 |
| Primary Part Number | 2-56UNCX1/4BHA |
| Item Name | Screw,cap,socket Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Bristol, Inc. Dba Remote Automation Solutions Div Remote Automation Solutions |
| Status | ACTIVE |
| Width Across Flats | 0.050 INCHES NOMINAL IN |
| Head Height | 0.038 INCHES MINIMUM AND 0.046 INCHES MAXIMUM IN |
| Fastener Length | 0.220 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-416 TY2 CL3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.184 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN |
| Hardness Rating | 36.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM OVERALL |
| Material Document and Classification | FF-S-86 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.086 INCHES IN |
| Head Style | BUTTON |
| Thread Direction | RIGHT-HAND |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Minimum Tensile Strength | 180000 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | HEXAGON |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 56 |
| Material | STEEL COMP 4037 OVERALL |
| Thread Series Designator | UNRC |
| Head Diameter | 0.154 INCHES MINIMUM AND 0.164 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 |
|---|---|
| 2-56UNCX1/4BHA PRIMARY | Bristol, Inc. Dba Remote Automation Solutions Div Remote Automation Solutions (USA) |
| Reference | Meaning |
|---|---|
| FS2012-11C | 5/9 Secondary reference Fastener Innovation Technology, Inc. Dba F I T |
| 965876-11C | 5/9 Secondary reference U.S. Government activity |
NSN 5305-01-293-2887 is a Screw,cap,socket Head, manufactured by Bristol, Inc. Dba Remote Automation Solutions Div Remote Automation Solutions, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-293-2887 has 1 manufacturer part number on file: 2-56UNCX1/4BHA (Bristol, Inc. Dba Remote Automation Solutions Div Remote Automation Solutions).
Key specifications for 2-56UNCX1/4BHA: Width Across Flats: 0.050 INCHES NOMINAL IN; Head Height: 0.038 INCHES MINIMUM AND 0.046 INCHES MAXIMUM IN; Fastener Length: 0.220 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-416 TY2 CL3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL. 18 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.