The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-281-5126, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Rhine Air, Inc. Government technical data includes 16 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 | 5305-01-281-5126 |
| Primary Part Number | 500-BW27 |
| Item Name | Screw,cap,socket Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Rhine Air, Inc |
| Status | ACTIVE |
| Extended Washer Thickness | 0.019 INCHES MINIMUM AND 0.031 INCHES MAXIMUM IN |
| Head Height | 0.124 INCHES MINIMUM AND 0.151 INCHES MAXIMUM IN |
| Fastener Length | 0.480 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN |
| Extended Washer Diameter | 0.384 INCHES MINIMUM AND 0.414 INCHES MAXIMUM IN |
| Thread Length | 0.397 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Head Style | HEXAGON EXTENDED WASHER |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.305 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN |
| Locking Feature | LOCKING TEETH BEARING SURFACE OF HEAD |
| Surface Treatment | ZINC OVERALL |
| Internal Drive Style | W/O INTERNAL DRIVE |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Material | STEEL 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 |
|---|---|
| 500-BW27 PRIMARY | Rhine Air, Inc (USA) |
NSN 5305-01-281-5126 is a Screw,cap,socket Head, manufactured by Rhine Air, Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-281-5126 has 1 manufacturer part number on file: 500-BW27 (Rhine Air, Inc).
Key specifications for 500-BW27: Extended Washer Thickness: 0.019 INCHES MINIMUM AND 0.031 INCHES MAXIMUM IN; Head Height: 0.124 INCHES MINIMUM AND 0.151 INCHES MAXIMUM IN; Fastener Length: 0.480 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN; Extended Washer Diameter: 0.384 INCHES MINIMUM AND 0.414 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.