The Thumbscrew, cataloged under National Stock Number 5305-00-263-3586, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Babcock & Wilcox Co. Government technical data includes 14 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-00-263-3586 |
| Primary Part Number | 0492711 |
| Item Name | Thumbscrew |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Babcock & Wilcox Co |
| Status | ACTIVE |
| Head Height | 0.906 INCHES MINIMUM IN |
| Fastener Length | 0.750 INCHES NOMINAL IN |
| Thread Length | 0.750 INCHES MINIMUM IN |
| Nominal Thread Diameter | 0.375 INCHES IN |
| Head Style | THUMB NO. 3 |
| Thread Direction | RIGHT-HAND |
| Departure From Cited Designator | AS MODIFIED BY THD CLASS AND LG |
| Point Style | CUP |
| Width Between Flats | 0.781 INCHES MINIMUM IN |
| Nondefinitive Spec/std Data | 1 TYPE AND 5 STYLE |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 16 |
| Material | STEEL COMP 1005 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 |
|---|---|
| 0492711 PRIMARY | Babcock & Wilcox Co (USA) |
| Reference | Meaning |
|---|---|
| MX242266-3 PIECE 32 | C/1 Advisory reference — outside the item-of-supply concept The Babcock & Wilcox Company Dba B & W Service Co Div B&w Service Company |
| FFT305A | 4/1 Identification reference U.S. Government activity |
| MX243188-32 | 5/9 Secondary reference Babcock & Wilcox Co |
NSN 5305-00-263-3586 is a Thumbscrew, manufactured by Babcock & Wilcox Co, classified under FSC 5305, Screws. Status: active.
NSN 5305-00-263-3586 has 1 manufacturer part number on file: 0492711 (Babcock & Wilcox Co).
1 possible match (shared part number, not a government interchangeability claim): 5305-00-408-0030. Verify interchangeability with system specifications before substitution.
Key specifications for 0492711: Head Height: 0.906 INCHES MINIMUM IN; Fastener Length: 0.750 INCHES NOMINAL IN; Thread Length: 0.750 INCHES MINIMUM IN; Nominal Thread Diameter: 0.375 INCHES IN. 14 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.