The Stud,handhole, cataloged under National Stock Number 4470-00-995-0680, is classified within Federal Supply Class 4470 (Nuclear Reactors) of the Furnace, Steam, Drying, Nuclear Reactors group. The manufacturer of record is Babcock & Wilcox Co. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 5 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4470-00-995-0680 |
| Primary Part Number | 18530F58 |
| Item Name | Stud,handhole |
| FSC / FSG | 4470 / 44 — Nuclear Reactors |
| Manufacturer | Babcock & Wilcox Co |
| Status | ACTIVE |
| Criticality Code Justification | ZZZY |
| Reference Number Differentiating Characteristics | MATERIAL WILL BE IN ACCORDANCE WITH NAVICP MECH; ACTIVITY HX QUALITY CONTROL, MANUFACTURING AND TESTING SPECIFICATIONS. |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL F — Mutilate — Cut |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Part Number | Manufacturer |
|---|---|
| 18530F58 | Babcock & Wilcox Co (USA) |
| 910D979PC13 | Westinghouse Electric Corp (USA) |
| 368B494PC2 | Westinghouse Electric Corp (USA) |
| NF42633PC551 | Amec Foster Wheeler North America Corp. Dba Foster Wheeler (USA) |
| RA3232 | A. O. Smith Corporation Dba a O Smith Corp (USA) |
| Reference | Meaning |
|---|---|
| 18530FPC58 | 3/1 Design control — primary reference Babcock & Wilcox Co |
| NF-42637IT551 | 5/1 Secondary reference Amec Foster Wheeler North America Corp. Dba Foster Wheeler |
| 667J089IT81 | 5/1 Secondary reference U.S. Government activity |
NSN 4470-00-995-0680 is a Stud,handhole, manufactured by Babcock & Wilcox Co, classified under FSC 4470, Nuclear Reactors. Status: active.
NSN 4470-00-995-0680 has 5 manufacturer part numbers on file: 18530F58 (Babcock & Wilcox Co), 910D979PC13 (Westinghouse Electric Corp), 368B494PC2 (Westinghouse Electric Corp), NF42633PC551 (Amec Foster Wheeler North America Corp. Dba Foster Wheeler), RA3232 (A. O. Smith Corporation Dba a O Smith Corp).
1 possible match (shared part number, not a government interchangeability claim): 4470-01-144-9246. Verify interchangeability with system specifications before substitution.
Key specifications for 18530F58: Criticality Code Justification: ZZZY; Reference Number Differentiating Characteristics: MATERIAL WILL BE IN ACCORDANCE WITH NAVICP MECH; ACTIVITY HX QUALITY CONTROL, MANUFACTURING AND TESTING SPECIFICATIONS.. 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.
NSN 4470-00-995-0680 has DEMIL Code F. Demilitarization may be required before disposal or transfer to non-military entities.
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.