The Stud,plain, cataloged under National Stock Number 5307-01-642-2788, is classified within Federal Supply Class 5307 (Studs) of the Hardware and Abrasives group. The manufacturer of record is Oil States Industries, Inc. Div Special Products Div. Government technical data includes 7 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5307-01-642-2788 |
| Primary Part Number | ME-401-520 |
| Item Name | Stud,plain |
| FSC / FSG | 5307 / 53 — Studs |
| Manufacturer | Oil States Industries, Inc. Div Special Products Div |
| Status | ACTIVE |
| Material Document and Classification | QQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE |
| Thread Direction | RIGHT-HAND STUD THREAD |
| Nominal Thread Size | 0.625 INCHES STUD THREAD IN |
| Thread Class | 3A STUD THREAD A |
| Thread Quantity Per Inch | 11 STUD THREAD |
| Material | COPPER ALLOY |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) STUD THREAD |
| 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 |
|---|---|
| ME-401-520 PRIMARY | Oil States Industries, Inc. Div Special Products Div (USA) |
| Reference | Meaning |
|---|---|
| 299947 ITEM 14 | 5/1 Secondary reference Oil States Industries, Inc. Div Special Products Div |
| 299947 ITEM 14 | 5/9 Secondary reference Edwards Aerospace Inc |
NSN 5307-01-642-2788 is a Stud,plain, manufactured by Oil States Industries, Inc. Div Special Products Div, classified under FSC 5307, Studs. Status: active.
NSN 5307-01-642-2788 has 1 manufacturer part number on file: ME-401-520 (Oil States Industries, Inc. Div Special Products Div).
Key specifications for ME-401-520: Material Document and Classification: QQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE; Overall Length: 3.500 INCHES NOMINAL IN; Thread Direction: RIGHT-HAND STUD THREAD; Nominal Thread Size: 0.625 INCHES STUD THREAD IN. 7 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.