The Screw,externally Relieved Body, cataloged under National Stock Number 5305-00-433-3570, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems. Government technical data includes 19 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-00-433-3570 |
| Primary Part Number | 330-1679-020 |
| Item Name | Screw,externally Relieved Body |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems |
| Status | ACTIVE |
| Head Height | 0.087 INCHES MINIMUM AND 0.097 INCHES MAXIMUM IN |
| Fastener Length | 0.484 INCHES MINIMUM AND 0.516 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.172 INCHES MINIMUM AND 0.204 INCHES MAXIMUM IN |
| Material Document and Classification | QQ-S-763,300 SERIES FED SPEC 1ST MATERIAL RESPONSE OR 66,300 SERIES FED STD 1ST MATERIAL RESPONSE OR COMP 16-18 OR 18-8 ASSN STD 2ND MATERIAL RESPONSE OVERALL |
| First Diameter From Head | 0.116 INCHES MINIMUM AND 0.118 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.138 INCHES IN |
| Head Style | PAN |
| Thread Direction | RIGHT-HAND |
| Distance From Largest Bearing Surface of Head to End of First Diameter | 0.280 INCHES MINIMUM AND 0.344 INCHES MAXIMUM IN |
| Externally Relieved Body Diameter Quantity | 1 |
| Surface Treatment | PASSIVATE OVERALL |
| Minimum Tensile Strength | 80000 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | CROSS RECESS TYPE 1 |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 32 |
| Material | STEEL CORROSION RESISTING OR STEEL OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.256 INCHES MINIMUM AND 0.270 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 |
|---|---|
| 330-1679-020 PRIMARY | Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems (USA) |
| Reference | Meaning |
|---|---|
| 330-1679-020 | 5/9 Secondary reference Allied Products Corp Pheoll Mfg Co Div |
| P330-1679-020 | 3/9 Design control — primary reference Allied Products Corp Pheoll Mfg Co Div |
NSN 5305-00-433-3570 is a Screw,externally Relieved Body, manufactured by Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems, classified under FSC 5305, Screws. Status: active.
NSN 5305-00-433-3570 has 1 manufacturer part number on file: 330-1679-020 (Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems).
Key specifications for 330-1679-020: Head Height: 0.087 INCHES MINIMUM AND 0.097 INCHES MAXIMUM IN; Fastener Length: 0.484 INCHES MINIMUM AND 0.516 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.172 INCHES MINIMUM AND 0.204 INCHES MAXIMUM IN. 19 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.