The Centering Block, cataloged under National Stock Number 3431-01-246-2170, is classified within Federal Supply Class 3431 (Electric Arc Welding Equipment) of the Metalworking Machinery (continued) group. Government technical data includes 3 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3431-01-246-2170 |
| Item Name | Centering Block |
| FSC / FSG | 3431 / 34 — Electric Arc Welding Equipment |
| Status | ACTIVE |
| Criticality Code Justification | ZZZY |
| Specification/standard Data | 96906-MIL-STD-792/I.C.1 GOVERNMENT STANDARD AND 96906-MIL-STD-129 GOVERNMENT STANDARD AND 81349-MIL-P-23199 GOVERNMENT SPECIFICATION AND 81346-ASTM-A240 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Reference Number Differentiating Characteristics | MATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER 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 | C |
| Reference | Meaning |
|---|---|
| 175C6930PC2 | 3/1 Design control — primary reference Fluor Marine Propulsion, Llc Dba Knolls Atomic Power Laboratory |
NSN 3431-01-246-2170 is a Centering Block, classified under FSC 3431, Electric Arc Welding Equipment. Status: active.
Key specifications for 3431-01-246-2170: Criticality Code Justification: ZZZY; Specification/standard Data: 96906-MIL-STD-792/I.C.1 GOVERNMENT STANDARD AND 96906-MIL-STD-129 GOVERNMENT STANDARD AND 81349-MIL-P-23199 GOVERNMENT SPECIFICATION AND 81346-ASTM-A240 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD; Reference Number Differentiating Characteristics: MATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS. 3 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 3431-01-246-2170 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.