The Screw,shoulder, cataloged under National Stock Number 5305-01-121-8393, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Ashcroft Inc Dba Heise. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-121-8393 |
| Primary Part Number | AKQ-83 |
| Item Name | Screw,shoulder |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Ashcroft Inc Dba Heise |
| Status | ACTIVE |
| Head Height | 0.080 INCHES NOMINAL IN |
| Fastener Length | 0.688 INCHES NOMINAL IN |
| Shoulder Length | 0.373 INCHES NOMINAL FIRST SHOULDER IN |
| Surface Treatment Document and Classification | MF39 FSCM 38056 MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| Shoulder Diameter | 0.234 INCHES NOMINAL FIRST SHOULDER IN |
| Thread Length | 0.213 INCHES MINIMUM AND 0.218 INCHES MAXIMUM IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Material Document and Classification | S14-21-32 FSCM 38056 MFR REF SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Head Style | FILLISTER |
| Thread Direction | RIGHT-HAND |
| Surface Treatment | PASSIVATE OVERALL |
| Internal Drive Style | SLOT |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Material | STEEL COMP 303 OVERALL |
| Thread Series Designator | UNF |
| Head Diameter | 0.500 INCHES NOMINAL 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 |
|---|---|
| AKQ-83 PRIMARY | Ashcroft Inc Dba Heise (USA) |
| Reference | Meaning |
|---|---|
| AKQ83 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
NSN 5305-01-121-8393 is a Screw,shoulder, manufactured by Ashcroft Inc Dba Heise, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-121-8393 has 1 manufacturer part number on file: AKQ-83 (Ashcroft Inc Dba Heise).
Key specifications for AKQ-83: Head Height: 0.080 INCHES NOMINAL IN; Fastener Length: 0.688 INCHES NOMINAL IN; Shoulder Length: 0.373 INCHES NOMINAL FIRST SHOULDER IN; Surface Treatment Document and Classification: MF39 FSCM 38056 MFR REF SINGLE TREATMENT RESPONSE OVERALL. 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.