The Bolt,shoulder, cataloged under National Stock Number 5306-00-620-7328, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Curtiss-Wright Controls, Inc. Div Actuation Division. 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-00-620-7328 |
| Primary Part Number | 2057S128 |
| Item Name | Bolt,shoulder |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Curtiss-Wright Controls, Inc. Div Actuation Division |
| Status | ACTIVE |
| Head Height | 0.190 INCHES MINIMUM AND 0.200 INCHES MAXIMUM IN |
| Fastener Length | 1.480 INCHES MINIMUM AND 1.500 INCHES MAXIMUM IN |
| Shoulder Length | 0.355 INCHES MINIMUM AND 0.395 INCHES MAXIMUM SECOND SHOULDER IN |
| Shoulder Length | 0.405 INCHES MINIMUM AND 0.415 INCHES MAXIMUM FIRST SHOULDER IN |
| Distance From Centerline to Flat | 0.240 INCHES MINIMUM AND 0.244 INCHES MAXIMUM IN |
| Shoulder Diameter | 0.400 INCHES MINIMUM AND 0.401 INCHES MAXIMUM ALL SHOULDERS IN |
| Thread Length | 0.590 INCHES MINIMUM AND 0.630 INCHES MAXIMUM IN |
| Shoulder Shape | ROUND ALL SHOULDERS |
| Hardness Rating | 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL |
| Material Document and Classification | AMS 6322 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.375 INCHES IN |
| Head Style | DEE CHAMFER |
| Thread Direction | RIGHT-HAND |
| Surface Treatment | CADMIUM OVERALL |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 24 |
| Material | STEEL COMP 8740 OVERALL |
| Thread Series Designator | UNF |
| Head Diameter | 0.615 INCHES MINIMUM AND 0.635 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 |
|---|---|
| 2057S128 PRIMARY | Curtiss-Wright Controls, Inc. Div Actuation Division (USA) |
NSN 5306-00-620-7328 is a Bolt,shoulder, manufactured by Curtiss-Wright Controls, Inc. Div Actuation Division, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-620-7328 has 1 manufacturer part number on file: 2057S128 (Curtiss-Wright Controls, Inc. Div Actuation Division).
Key specifications for 2057S128: Head Height: 0.190 INCHES MINIMUM AND 0.200 INCHES MAXIMUM IN; Fastener Length: 1.480 INCHES MINIMUM AND 1.500 INCHES MAXIMUM IN; Shoulder Length: 0.355 INCHES MINIMUM AND 0.395 INCHES MAXIMUM SECOND SHOULDER IN; Shoulder Length: 0.405 INCHES MINIMUM AND 0.415 INCHES MAXIMUM FIRST SHOULDER 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.