The Screw,shoulder, cataloged under National Stock Number 5305-01-660-3488, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company Div Defense. Government technical data includes 18 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-660-3488 |
| Primary Part Number | 3M1278E3D13AL |
| Item Name | Screw,shoulder |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Head Height | 0.046 INCHES NOMINAL IN |
| Fastener Length | 1.1425 INCHES MINIMUM AND 1.1725 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | AS5272 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.345 INCHES NOMINAL IN |
| Shank Unthreaded Hole Diameter | 0.070 INCHES MINIMUM AND 0.080 INCHES MAXIMUM THREADS IN |
| Nominal Thread Diameter | 0.1900 INCHES IN |
| Features Provided | DRY FILM LUBRICANT |
| Head Style | FILLISTER COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Surface Treatment | LUBRICANT OVERALL |
| Internal Drive Style | TORX |
| Countersink Angle | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Material | NICKEL ALLOY 718 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 1.0365 INCHES MINIMUM AND 1.0465 INCHES MAXIMUM THREADS IN |
| Head Diameter | 0.294 INCHES MINIMUM AND 0.301 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 |
|---|---|
| 3M1278E3D13AL PRIMARY | The Boeing Company Div Defense (USA) |
| 3M1278E3D13AL | B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace (USA) |
NSN 5305-01-660-3488 is a Screw,shoulder, manufactured by The Boeing Company Div Defense, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-660-3488 has 2 manufacturer part numbers on file: 3M1278E3D13AL (The Boeing Company Div Defense), 3M1278E3D13AL (B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace).
Key specifications for 3M1278E3D13AL: Head Height: 0.046 INCHES NOMINAL IN; Fastener Length: 1.1425 INCHES MINIMUM AND 1.1725 INCHES MAXIMUM IN; Surface Treatment Document and Classification: AS5272 ASSN STD SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.345 INCHES NOMINAL IN. 18 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.