The Stud,plain, cataloged under National Stock Number 5307-00-207-8031, is classified within Federal Supply Class 5307 (Studs) of the Hardware and Abrasives group. The manufacturer of record is Ontic Engineering & Manufacturing, Inc Dba Ontic Us. Government technical data includes 17 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5307-00-207-8031 |
| Primary Part Number | PS112-21-0 |
| Item Name | Stud,plain |
| FSC / FSG | 5307 / 53 — Studs |
| Manufacturer | Ontic Engineering & Manufacturing, Inc Dba Ontic Us |
| Status | ACTIVE |
| Cotter Pin Hole Diameter | 0.076 INCHES NOMINAL FIRST HOLE IN |
| Thread Length | 0.531 INCHES NOMINAL NUT THREAD IN |
| Thread Length | 0.531 INCHES NOMINAL STUD THREAD IN |
| Material Document and Classification | MIL-S-8695 MIL SPEC SINGLE MATERIAL RESPONSE |
| Thread Direction | RIGHT-HAND STUD THREAD |
| Thread Direction | RIGHT-HAND NUT THREAD |
| Nominal Thread Size | 0.312 INCHES NUT THREAD IN |
| Nominal Thread Size | 0.312 INCHES STUD THREAD IN |
| Surface Treatment | CADMIUM OVERALL |
| Thread Class | 3A NUT THREAD A |
| Thread Class | 5A STUD THREAD A |
| Thread Quantity Per Inch | 24 NUT THREAD |
| Thread Quantity Per Inch | 18 STUD THREAD |
| Material | STEEL COMP 4037 |
| Thread Series Designator | UNF NUT THREAD |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) STUD THREAD |
| Distance From Cotter Pin Hole Centerline to Nut End | 0.094 INCHES NOMINAL FIRST HOLE 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 |
|---|---|
| PS112-21-0 PRIMARY | Ontic Engineering & Manufacturing, Inc Dba Ontic Us (USA) |
| Reference | Meaning |
|---|---|
| PS112-21-0 | 5/9 Secondary reference Donallco Inc |
NSN 5307-00-207-8031 is a Stud,plain, manufactured by Ontic Engineering & Manufacturing, Inc Dba Ontic Us, classified under FSC 5307, Studs. Status: active.
NSN 5307-00-207-8031 has 1 manufacturer part number on file: PS112-21-0 (Ontic Engineering & Manufacturing, Inc Dba Ontic Us).
Key specifications for PS112-21-0: Cotter Pin Hole Diameter: 0.076 INCHES NOMINAL FIRST HOLE IN; Thread Length: 0.531 INCHES NOMINAL NUT THREAD IN; Thread Length: 0.531 INCHES NOMINAL STUD THREAD IN; Material Document and Classification: MIL-S-8695 MIL SPEC SINGLE MATERIAL RESPONSE. 17 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.