The Stud,self-Locking, cataloged under National Stock Number 5307-01-437-6988, is classified within Federal Supply Class 5307 (Studs) of the Hardware and Abrasives group. Government technical data includes 15 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5307-01-437-6988 |
| Item Name | Stud,self-Locking |
| FSC / FSG | 5307 / 53 — Studs |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.4375 INCHES NOMINAL NUT THREAD IN |
| Style Designator | SELF-LOCKING |
| Material Document and Classification | ASTM A493, COMP 302 ASSN STD 1ST MATERIAL RESPONSE OR ASTM A582, COMP 303 ASSN STD 2ND MATERIAL RESPONSE OR ASTM A582, COMP 303SE ASSN STD 3RD MATERIAL RESPONSE |
| Thread Direction | RIGHT-HAND NUT THREAD |
| Nominal Thread Size | 0.190 INCHES NUT THREAD IN |
| Head Length | 0.055 INCHES MINIMUM AND 0.061 INCHES MAXIMUM IN |
| Locking Feature | SELF-CLINCHING HEAD |
| Surface Treatment | PASSIVATE OVERALL |
| Thread Class | 2A NUT THREAD A |
| Thread Quantity Per Inch | 32 NUT THREAD |
| Material | STEEL COMP 302 OR STEEL COMP 303 OR STEEL COMP 303SE |
| Distance Across Flats | 0.297 INCHES MINIMUM AND 0.327 INCHES MAXIMUM IN |
| Thread Series Designator | UNF NUT THREAD |
| Head Diameter | 0.261 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 |
| Reference | Meaning |
|---|---|
| M63540/3-26-7 | 2/2 Government specification standardization U.S. Government activity |
| MIL-S-63540/3 | 4/1 Identification reference U.S. Government activity |
NSN 5307-01-437-6988 is a Stud,self-Locking, classified under FSC 5307, Studs. Status: active.
Key specifications for 5307-01-437-6988: Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.4375 INCHES NOMINAL NUT THREAD IN; Style Designator: SELF-LOCKING; Material Document and Classification: ASTM A493, COMP 302 ASSN STD 1ST MATERIAL RESPONSE OR ASTM A582, COMP 303 ASSN STD 2ND MATERIAL RESPONSE OR ASTM A582, COMP 303SE ASSN STD 3RD MATERIAL RESPONSE. 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.