The Plumb Bob, cataloged under National Stock Number 5210-00-900-0048, is classified within Federal Supply Class 5210 (Measuring Tools, Craftsmen's) of the Measuring Tools group. The manufacturer of record is Chicago Steel Tape Co Inc Berger Instruments Co Inc. Government technical data includes 9 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5210-00-900-0048 |
| Primary Part Number | B3120 |
| Item Name | Plumb Bob |
| FSC / FSG | 5210 / 52 — Measuring Tools, Craftsmen's |
| Manufacturer | Chicago Steel Tape Co Inc Berger Instruments Co Inc |
| Status | ACTIVE |
| Top Removability | REMOVABLE |
| Point Removability | REMOVABLE |
| Style Designator | LONG NECK TAPER POINT |
| Accessory Components and Quantity | SLACK ADJUSTER; 6 FT LINE CORD FT |
| Nondefinitive Spec/std Data | 2503560 DRAWING NUMBER |
| Body Type | SOLID |
| Point Hardness Designation | HARDENED |
| Material | COPPER ALLOY |
| Top Adjustability | NONADJUSTABLE |
| 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 |
|---|---|
| B3120 PRIMARY | Chicago Steel Tape Co Inc Berger Instruments Co Inc (USA) |
| 2503560 | Honeywell International Inc. Dba Honeywell International (USA) |
| 3120 PRIMARY | Chicago Steel Tape Co Inc Berger Instruments Co Inc (USA) |
| Reference | Meaning |
|---|---|
| 2503560 | 5/9 Secondary reference Lockheed Martin Corporation Div Rms - Mitchel Field |
NSN 5210-00-900-0048 is a Plumb Bob, manufactured by Chicago Steel Tape Co Inc Berger Instruments Co Inc, classified under FSC 5210, Measuring Tools, Craftsmen's. Status: active.
NSN 5210-00-900-0048 has 3 manufacturer part numbers on file: B3120 (Chicago Steel Tape Co Inc Berger Instruments Co Inc), 2503560 (Honeywell International Inc. Dba Honeywell International), 3120 (Chicago Steel Tape Co Inc Berger Instruments Co Inc).
1 possible match (shared part number, not a government interchangeability claim): 5210-01-519-1544. Verify interchangeability with system specifications before substitution.
Key specifications for B3120: Top Removability: REMOVABLE; Point Removability: REMOVABLE; Style Designator: LONG NECK TAPER POINT; Weight: 12.000 OUNCES OZ. 9 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.