The Setscrew, cataloged under National Stock Number 5305-00-248-5873, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Frederick Custom Machining Inc. Government technical data includes 13 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 6 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-00-248-5873 |
| Primary Part Number | 24643DP266-2 |
| Item Name | Setscrew |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Frederick Custom Machining Inc |
| Status | ACTIVE |
| Fastener Length | 0.219 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN |
| Thread Length | 0.250 INCHES MAXIMUM IN |
| Material Document and Classification | QQ-B-637 FED SPEC ALL MATERIAL RESPONSES OVERALL |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Head Style | HEADLESS (SETSCREW) |
| Thread Direction | RIGHT-HAND |
| Point Style | OVAL |
| Nondefinitive Spec/std Data | 2 TYPE AND 3 STYLE |
| Internal Drive Style | CROSS RECESS TYPE 1 |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Material | COPPER ALLOY 462 OR COPPER ALLOY 464 OR COPPER ALLOY 482 OR COPPER ALLOY 485 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 |
|---|---|
| 24643DP266-2 PRIMARY | Frederick Custom Machining Inc (USA) |
| Reference | Meaning |
|---|---|
| FFS103TYPE2STYLE3 | 4/1 Identification reference U.S. Government activity |
NSN 5305-00-248-5873 is a Setscrew, manufactured by Frederick Custom Machining Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-00-248-5873 has 1 manufacturer part number on file: 24643DP266-2 (Frederick Custom Machining Inc).
6 possible matches (shared part number, not a government interchangeability claim): 5305-00-257-0905, 5305-00-257-2034, 5305-00-257-4273. Verify interchangeability with system specifications before substitution.
Key specifications for 24643DP266-2: Fastener Length: 0.219 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN; Thread Length: 0.250 INCHES MAXIMUM IN; Material Document and Classification: QQ-B-637 FED SPEC ALL MATERIAL RESPONSES OVERALL; Nominal Thread Diameter: 0.190 INCHES IN. 13 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.