The Screw,machine, cataloged under National Stock Number 5305-00-151-1237, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company Div Legacy Am&m. Government technical data includes 17 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-00-151-1237 |
| Primary Part Number | B1287-6-20 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | The Boeing Company Div Legacy Am&m |
| Status | ACTIVE |
| Head Height | 0.103 INCHES NOMINAL IN |
| Screw Surface Treatment | CADMIUM |
| Fastener Length | 1.188 INCHES MINIMUM AND 1.250 INCHES MAXIMUM IN |
| Screw Material Document and Classification | QQ-S-671 FED SPEC SINGLE MATERIAL RESPONSE |
| Thread Length | 1.188 INCHES MINIMUM AND 1.250 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.138 INCHES IN |
| Head Style | ROUND |
| Thread Direction | RIGHT-HAND |
| Nondefinitive Spec/std Data | 3 TYPE AND 1C STYLE |
| Screw Material | STEEL COMP 1010 |
| Minimum Tensile Strength | 55000 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | CROSS RECESS TYPE 1 |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 32 |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN |
| Screw Surface Treatment Document and Classification | QQ-P-416,TY 1,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 |
|---|---|
| B1287-6-20 PRIMARY | The Boeing Company Div Legacy Am&m (USA) |
| Reference | Meaning |
|---|---|
| AN515-6R20 | 5/2 Secondary reference U.S. Government activity |
| 1177-6-20 | 3/2 Design control — primary reference U.S. Government activity |
| 1027301-6-20 | 5/2 Secondary reference U.S. Government activity |
| 1027301-6-20 | 5/9 Secondary reference The Boeing Company |
| 7S4-6-20 | 3/1 Design control — primary reference The Boeing Company Div Legacy Am&m |
NSN 5305-00-151-1237 is a Screw,machine, manufactured by The Boeing Company Div Legacy Am&m, classified under FSC 5305, Screws. Status: active.
NSN 5305-00-151-1237 has 1 manufacturer part number on file: B1287-6-20 (The Boeing Company Div Legacy Am&m).
Key specifications for B1287-6-20: Head Height: 0.103 INCHES NOMINAL IN; Screw Surface Treatment: CADMIUM; Fastener Length: 1.188 INCHES MINIMUM AND 1.250 INCHES MAXIMUM IN; Screw Material Document and Classification: QQ-S-671 FED SPEC SINGLE MATERIAL RESPONSE. 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.