The Screw,shoulder, cataloged under National Stock Number 5305-01-177-8428, 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 18 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 | 5305-01-177-8428 |
| Primary Part Number | L6312046-005 |
| Item Name | Screw,shoulder |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | The Boeing Company Div Legacy Am&m |
| Status | ACTIVE |
| Fastener Length | 2.958 INCHES MINIMUM AND 2.968 INCHES MAXIMUM IN |
| Shoulder Length | 2.376 INCHES MINIMUM AND 2.386 INCHES MAXIMUM FIRST SHOULDER IN |
| Shoulder Diameter | 0.622 INCHES MINIMUM AND 0.623 INCHES MAXIMUM FIRST SHOULDER IN |
| Thread Length | 0.400 INCHES MINIMUM IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Shank Unthreaded Hole Diameter | 0.106 INCHES MINIMUM AND 0.116 INCHES MAXIMUM FIRST HOLE IN |
| Material Document and Classification | AMS 5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.500 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Internal Drive Style | HIGH-TORQUE |
| Countersink Angle | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 20 |
| Material | STEEL COMP XM-13 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 2.817 INCHES MINIMUM AND 2.827 INCHES MAXIMUM FIRST HOLE IN |
| Head Diameter | 0.848 INCHES MINIMUM AND 0.925 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 |
|---|---|
| L6312046-005 PRIMARY | The Boeing Company Div Legacy Am&m (USA) |
NSN 5305-01-177-8428 is a Screw,shoulder, manufactured by The Boeing Company Div Legacy Am&m, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-177-8428 has 1 manufacturer part number on file: L6312046-005 (The Boeing Company Div Legacy Am&m).
Key specifications for L6312046-005: Fastener Length: 2.958 INCHES MINIMUM AND 2.968 INCHES MAXIMUM IN; Shoulder Length: 2.376 INCHES MINIMUM AND 2.386 INCHES MAXIMUM FIRST SHOULDER IN; Shoulder Diameter: 0.622 INCHES MINIMUM AND 0.623 INCHES MAXIMUM FIRST SHOULDER IN; Thread Length: 0.400 INCHES MINIMUM 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.