The Screw,cap,socket Head, cataloged under National Stock Number 5305-00-279-4271, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Ge Aviation Systems Llc. Government technical data includes 17 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5305-00-279-4271 |
| Primary Part Number | 33AF1221-02-14 |
| Item Name | Screw,cap,socket Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Ge Aviation Systems Llc |
| Status | ACTIVE |
| Spline Minor Diameter | 0.077 INCHES MINIMUM AND 0.079 INCHES MAXIMUM IN |
| Head Height | 0.086 INCHES MAXIMUM IN |
| Fastener Length | 0.859 INCHES MINIMUM AND 0.891 INCHES MAXIMUM IN |
| Spline Width | 0.023 INCHES MINIMUM AND 0.024 INCHES MAXIMUM IN |
| Thread Length | 0.823 INCHES MINIMUM AND 0.891 INCHES MAXIMUM IN |
| Hardness Rating | 70.0 ROCKWELL B MINIMUM AND 90.0 ROCKWELL C MAXIMUM OVERALL |
| Material Document and Classification | AISI ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Spline Major Diameter | 0.095 INCHES MINIMUM AND 0.096 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.086 INCHES IN |
| Head Style | FLAT CHAMFER |
| Thread Direction | RIGHT-HAND |
| Internal Drive Style | SIX SPLINE |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 56 |
| Material | STEEL COMP 302 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.131 INCHES MINIMUM AND 0.140 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 |
|---|---|
| NDN8462-32ND17 | Ge Aviation Systems Ltd (GBR) |
| 33AF1221-02-14 | Ge Aviation Systems Ltd (GBR) |
| 33AF1221-02-14 PRIMARY | Ge Aviation Systems Llc (USA) |
| Reference | Meaning |
|---|---|
| 33AF1221-02-14 | 5/9 Secondary reference Smiths Aerospace (customer Services Division) |
| NDN8462-32ND17 | 5/9 Secondary reference Smiths Aerospace (customer Services Division) |
NSN 5305-00-279-4271 is a Screw,cap,socket Head, manufactured by Ge Aviation Systems Llc, classified under FSC 5305, Screws. Status: active.
NSN 5305-00-279-4271 has 3 manufacturer part numbers on file: NDN8462-32ND17 (Ge Aviation Systems Ltd), 33AF1221-02-14 (Ge Aviation Systems Ltd), 33AF1221-02-14 (Ge Aviation Systems Llc).
Key specifications for 33AF1221-02-14: Spline Minor Diameter: 0.077 INCHES MINIMUM AND 0.079 INCHES MAXIMUM IN; Head Height: 0.086 INCHES MAXIMUM IN; Fastener Length: 0.859 INCHES MINIMUM AND 0.891 INCHES MAXIMUM IN; Spline Width: 0.023 INCHES MINIMUM AND 0.024 INCHES MAXIMUM IN. 17 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.