The Stud - 0.625 - 11 X 2.250, cataloged under National Stock Number 5307-01-588-8997, is classified within Federal Supply Class 5307 (Studs) of the Hardware and Abrasives group. Government technical data includes 2 specifications, cited from the U.S. Government catalog. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5307-01-588-8997 |
| Item Name | Stud - 0.625 - 11 X 2.250 |
| FSC / FSG | 5307 / 53 — Studs |
| Status | ACTIVE |
| Overall Diameter | 0.625 INCHES NOMINAL IN |
| Material | STEEL CORROSION RESISTING |
| 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 |
|---|---|
| R89158X05020 | 3/9 Design control — primary reference Siemens Energy, Inc. Dba Dresser-Rand |
| 200138FPC614 | 5/9 Secondary reference Siemens Energy, Inc. Dba Dresser-Rand |
| S11018 | C/1 Advisory reference — outside the item-of-supply concept Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions |
| R89158X05020 | C/1 Advisory reference — outside the item-of-supply concept Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions |
| S11018 | 5/9 Secondary reference Siemens Energy, Inc. Dba Dresser-Rand |
NSN 5307-01-588-8997 is a Stud - 0.625 - 11 X 2.250, classified under FSC 5307, Studs. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 5307-01-640-8117. Verify interchangeability with system specifications before substitution.
Key specifications for 5307-01-588-8997: Overall Diameter: 0.625 INCHES NOMINAL IN; Overall Length: 2.250 INCHES NOMINAL IN; Special Features: MATL IS QQ-S-630; End Item Identification: KNOLLS ATOMIC POWER LAB SPECIAL PROJECT MAINTENANCE SYSTEM. 2 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.