The Screw,machine, cataloged under National Stock Number 5305-00-529-0652, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Hydro-Aire Aerospace Corp. Dba Lear Romec Div Lear Romec. 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-00-529-0652 |
| Primary Part Number | RB21337-2 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Hydro-Aire Aerospace Corp. Dba Lear Romec Div Lear Romec |
| Status | ACTIVE |
| Head Height | 0.106 INCHES MINIMUM AND 0.113 INCHES MAXIMUM IN |
| Screw Surface Treatment | CADMIUM |
| Fastener Length | 3.094 INCHES MINIMUM AND 3.125 INCHES MAXIMUM IN |
| Screw Material Document and Classification | QQ-S-633 FED SPEC 1ST MATERIAL RESPONSE OR QQ-S-633 FSB1112 FED SPEC 2ND MATERIAL RESPONSE OR QQ-S-633 FSB1113 FED SPEC 3RD MATERIAL RESPONSE |
| Thread Length | 0.500 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.164 INCHES IN |
| Head Style | FILLISTER |
| Thread Direction | RIGHT-HAND |
| Internal Drive Style | SLOT |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 32 |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.250 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN |
| Screw Surface Treatment Document and Classification | QQ-P-416 TY 2 CL 3 FED SPEC SINGLE TREATMENT RESPONSE |
| 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 |
|---|---|
| RB21337-2 PRIMARY | Hydro-Aire Aerospace Corp. Dba Lear Romec Div Lear Romec (USA) |
NSN 5305-00-529-0652 is a Screw,machine, manufactured by Hydro-Aire Aerospace Corp. Dba Lear Romec Div Lear Romec, classified under FSC 5305, Screws. Status: active.
NSN 5305-00-529-0652 has 1 manufacturer part number on file: RB21337-2 (Hydro-Aire Aerospace Corp. Dba Lear Romec Div Lear Romec).
Key specifications for RB21337-2: Head Height: 0.106 INCHES MINIMUM AND 0.113 INCHES MAXIMUM IN; Screw Surface Treatment: CADMIUM; Fastener Length: 3.094 INCHES MINIMUM AND 3.125 INCHES MAXIMUM IN; Screw Material Document and Classification: QQ-S-633 FED SPEC 1ST MATERIAL RESPONSE OR QQ-S-633 FSB1112 FED SPEC 2ND MATERIAL RESPONSE OR QQ-S-633 FSB1113 FED SPEC 3RD MATERIAL RESPONSE. 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.