The Eyelet,turnlock Fastener, cataloged under National Stock Number 5325-01-524-7138, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company Div Commercial. Government technical data includes 10 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5325-01-524-7138 |
| Primary Part Number | BACG20X4 |
| Item Name | Eyelet,turnlock Fastener |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | The Boeing Company Div Commercial |
| Status | ACTIVE |
| Eyelet Height | 0.192 INCHES MINIMUM AND 0.202 INCHES MAXIMUM IN |
| Distance Between Flanges | 0.143 INCHES MINIMUM AND 0.150 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-416, TY II, CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Largest Outside Diameter | 0.617 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN |
| Turnlock Eyelet Style | EYELET |
| Material Document and Classification | QQ-S-637 GR. 1144 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Eyelet Inside Diameter | 0.351 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN |
| Smallest Outside Diameter | 0.467 INCHES MINIMUM AND 0.473 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OVERALL |
| Material | STEEL COMP 1144 OVERALL |
| 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 |
|---|---|
| BACG20X4 PRIMARY | The Boeing Company Div Commercial (USA) |
| Reference | Meaning |
|---|---|
| BACG20X4 | 5/9 Secondary reference U.S. Government activity |
NSN 5325-01-524-7138 is a Eyelet,turnlock Fastener, manufactured by The Boeing Company Div Commercial, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-01-524-7138 has 1 manufacturer part number on file: BACG20X4 (The Boeing Company Div Commercial).
Key specifications for BACG20X4: Eyelet Height: 0.192 INCHES MINIMUM AND 0.202 INCHES MAXIMUM IN; Distance Between Flanges: 0.143 INCHES MINIMUM AND 0.150 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-416, TY II, CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Largest Outside Diameter: 0.617 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN. 10 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.