The Clampblock, cataloged under National Stock Number 5340-01-207-0537, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Lockheed Martin Corporation Div Rms. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-207-0537 |
| Primary Part Number | 1210C1623 |
| Item Name | Clampblock |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Lockheed Martin Corporation Div Rms |
| Status | ACTIVE |
| General Characteristics Item Description | MELAMINE,GLASS REINFORCED PER MIL-P-15037,TY GME; 4.750 IN. LG; 1.620 IN. W; FIVE TUBE OPENINGS; TWO MOUNTING HOLES,0.279 IN. MIN,0.286 IN. MAX DIA; C TO C DISTANCE BTWN MOUNTING HOLES 0.875 IN. IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Unit of Issue | EA |
| Part Number | Manufacturer |
|---|---|
| 1210C1623 PRIMARY | Lockheed Martin Corporation Div Rms (USA) |
| Reference | Meaning |
|---|---|
| 1210C1623 | 3/9 Design control — primary reference Martin Marietta Technologies Inc Sub of Martin Marietta Corp Aero and Naval Systems |
| 1213E1665 FIND 39 | 5/9 Secondary reference Martin Marietta Technologies Inc Sub of Martin Marietta Corp Aero and Naval Systems |
NSN 5340-01-207-0537 is a Clampblock, manufactured by Lockheed Martin Corporation Div Rms, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-207-0537 has 1 manufacturer part number on file: 1210C1623 (Lockheed Martin Corporation Div Rms).
Key specifications for 1210C1623: General Characteristics Item Description: MELAMINE,GLASS REINFORCED PER MIL-P-15037,TY GME; 4.750 IN. LG; 1.620 IN. W; FIVE TUBE OPENINGS; TWO MOUNTING HOLES,0.279 IN. MIN,0.286 IN. MAX DIA; C TO C DISTANCE BTWN MOUNTING HOLES 0.875 IN. IN. 1 specification is documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). 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.