The Stud Assembly,turnlock Fastener, cataloged under National Stock Number 5325-01-580-9799, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is Howmet Global Fastening Systems Inc Div Camloc Products. Government technical data includes 5 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-01-580-9799 |
| Primary Part Number | 27S3-4F |
| Item Name | Stud Assembly,turnlock Fastener |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Howmet Global Fastening Systems Inc Div Camloc Products |
| Status | ACTIVE |
| Diameter | 0.391 INCHES NOMINAL IN |
| Turnlock Stud Head Style | FLAT COUNTERSUNK |
| Surface Treatment | CHROMIUM STUD |
| Surface Treatment | ZINC PIN |
| Material | STEEL COMP 4037 OVERALL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 5325-01-580-9799 is a Stud Assembly,turnlock Fastener, manufactured by Howmet Global Fastening Systems Inc Div Camloc Products, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-01-580-9799 has 2 manufacturer part numbers on file: 27S3-4F (Fairchild Fasteners Europe - Camloc Gmbh), 27S3-4F (Howmet Global Fastening Systems Inc Div Camloc Products).
1 possible match (shared part number, not a government interchangeability claim): 1680-01-678-9906. Verify interchangeability with system specifications before substitution.
Key specifications for 27S3-4F: Diameter: 0.391 INCHES NOMINAL IN; Turnlock Stud Head Style: FLAT COUNTERSUNK; Surface Treatment: CHROMIUM STUD; Surface Treatment: ZINC PIN. 5 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.