The Stud Assembly,turnlock Fastener, cataloged under National Stock Number 5325-00-700-5528, 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 27 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-00-700-5528 |
| Primary Part Number | 28S7-8 |
| Item Name | Stud Assembly,turnlock Fastener |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Howmet Global Fastening Systems Inc Div Camloc Products |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-416 TY 2 CL 2 FED SPEC SINGLE TREATMENT RESPONSE HEAD |
| Surface Treatment Document and Classification | MIL-STD-171 FINISH NO.5.4.1 MIL STD SINGLE TREATMENT RESPONSE WASHER |
| Surface Treatment Document and Classification | QQ-P-416 TY 2 CL 2 FED SPEC SINGLE TREATMENT RESPONSE EJECTOR SPRING |
| Surface Treatment Document and Classification | QQ-P-416 TY 2 CL 2 FED SPEC SINGLE TREATMENT RESPONSE EYELET |
| Surface Treatment Document and Classification | QQ-P-416 TY 2 CL 2 FED SPEC SINGLE TREATMENT RESPONSE PIN |
| Surface Treatment Document and Classification | QQ-P-416 TY 2 CL 2 FED SPEC SINGLE TREATMENT RESPONSE STUD |
| Head Length | 0.720 INCHES NOMINAL IN |
| Eyelet Outside Diameter | 0.519 INCHES MINIMUM AND 0.531 INCHES MAXIMUM IN |
| Material Accommodated Thickness | 0.240 INCHES MINIMUM AND 0.269 INCHES MAXIMUM IN |
| Stud Head Height | 0.174 INCHES MINIMUM AND 0.186 INCHES MAXIMUM IN |
| Securing Device Type | WASHER |
| Distance From Engaging Member to Largest Bearing Surface of Head | 0.467 INCHES NOMINAL IN |
| Turnlock Stud Head Style | FILLISTER WING |
| Surface Treatment | PASSIVATE WASHER |
| Surface Treatment | CADMIUM AND CHROMATE EJECTOR SPRING |
| Surface Treatment | CADMIUM AND CHROMATE HEAD |
| Surface Treatment | CADMIUM AND CHROMATE STUD |
| Surface Treatment | CADMIUM AND CHROMATE PIN |
| Surface Treatment | CADMIUM AND CHROMATE EYELET |
| Material | STEEL COMP 4037 STUD |
| Material | STEEL COMP 1009 HEAD |
| Material | STEEL EJECTOR SPRING |
| Material | STEEL PIN |
| Material | STEEL COMP 1009 EYELET |
| Material | STEEL COMP 304 WASHER |
| Stud Assembly Style | STUD ASSEMBLY |
| Stud Diameter | 0.305 INCHES MINIMUM AND 0.315 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 |
|---|---|
| 28S7-8 PRIMARY | Howmet Global Fastening Systems Inc Div Camloc Products (USA) |
| 28S7-8 | Fairchild Fasteners Europe - Camloc Gmbh (DEU) |
| 10033220-7 | Us Army Aviation and Missile Command (USA) |
NSN 5325-00-700-5528 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 5325-00-700-5528 has 3 manufacturer part numbers on file: 28S7-8 (Howmet Global Fastening Systems Inc Div Camloc Products), 28S7-8 (Fairchild Fasteners Europe - Camloc Gmbh), 10033220-7 (Us Army Aviation and Missile Command).
Key specifications for 28S7-8: Surface Treatment Document and Classification: QQ-P-416 TY 2 CL 2 FED SPEC SINGLE TREATMENT RESPONSE HEAD; Surface Treatment Document and Classification: MIL-STD-171 FINISH NO.5.4.1 MIL STD SINGLE TREATMENT RESPONSE WASHER; Surface Treatment Document and Classification: QQ-P-416 TY 2 CL 2 FED SPEC SINGLE TREATMENT RESPONSE EJECTOR SPRING; Surface Treatment Document and Classification: QQ-P-416 TY 2 CL 2 FED SPEC SINGLE TREATMENT RESPONSE EYELET. 27 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.