The Stud,turnlock Fastener, cataloged under National Stock Number 5325-01-687-0167, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is Southco Inc New York Div. Government technical data includes 15 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5325-01-687-0167 |
| Primary Part Number | D4-AW35T27DSS18PSNA |
| Item Name | Stud,turnlock Fastener |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Southco Inc New York Div |
| Status | ACTIVE |
| Surface Treatment Document and Classification | AMS-QQ-P-35 OR AMS2700 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Head Length | 0.875 INCHES NOMINAL IN |
| Material Accommodated Thickness | 0.241 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN |
| Turnlock Stud Shank Style | STUD SHANK |
| Material Document and Classification | 17-4PH PER ASTM A564/A564M AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) SINGLE MATERIAL RESPONSE STUD |
| Material Document and Classification | ASTM A240/A240M AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) 1ST MATERIAL RESPONSE OR 17-4PH PER ASTM A564/A564M AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) 2ND MATERIAL RESPONSE HEAD |
| Stud Head Height | 0.310 INCHES NOMINAL IN |
| Shank Neck Length | 0.360 INCHES MINIMUM AND 0.380 INCHES MAXIMUM IN |
| Specification/standard Data | 97499-50-007 MANUFACTURERS SOURCE CONTROL |
| Turnlock Stud Head Style | FILLISTER WING |
| Stud Shank Major Diameter | 0.212 INCHES MINIMUM AND 0.217 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Material | STEEL COMP 302 OR STEEL COMP 630 HEAD |
| Material | STEEL COMP 630 STUD |
| Grip Length | 0.490 INCHES MINIMUM AND 0.510 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 |
|---|---|
| D4-AW35T27DSS18PSNA PRIMARY | Southco Inc New York Div (USA) |
| Reference | Meaning |
|---|---|
| 50-007W27C | 1/2 Source control — Government-approved source U.S. Government activity |
NSN 5325-01-687-0167 is a Stud,turnlock Fastener, manufactured by Southco Inc New York Div, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-01-687-0167 has 1 manufacturer part number on file: D4-AW35T27DSS18PSNA (Southco Inc New York Div).
Key specifications for D4-AW35T27DSS18PSNA: Surface Treatment Document and Classification: AMS-QQ-P-35 OR AMS2700 ASSN STD SINGLE TREATMENT RESPONSE OVERALL; Head Length: 0.875 INCHES NOMINAL IN; Material Accommodated Thickness: 0.241 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN; Turnlock Stud Shank Style: STUD SHANK. 15 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.