The Clamp,block,section, cataloged under National Stock Number 5340-01-337-3973, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Northrop Grumman Systems Corporation. Government technical data includes 13 specifications, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5340-01-337-3973 |
| Primary Part Number | A51L20119-11 |
| Item Name | Clamp,block,section |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Mounting Hole Quantity | 22 |
| Clamping Hole Quantity | 11 |
| Distance From End to First Clamping Hole Center | 0.688 INCHES NOMINAL IN |
| Block Height | 0.380 INCHES NOMINAL0.380 INCHES NOMINAL IN |
| Style Designator | RECTANGULAR |
| Material Document and Classification | G-4104BFA,CAGEC 26512 MFR REF SINGLE MATERIAL RESPONSE |
| Mounting Hole Diameter | 0.190 INCHES MINIMUM AND 0.190 INCHES MINIMUM AND 0.196 INCHES MAXIMUM0.196 INCHES MAXIMUM IN |
| Clamping Hole Diameter | 0.500 INCHES MINIMUM AND 0.504 INCHES MAXIMUM SINGLE HOLE IN |
| Distance From Center of Mounting Hole to Edge Along the Width | 0.188 INCHES NOMINAL0.188 INCHES NOMINAL IN |
| Distance From End to First Mounting Hole Center | 0.250 INCHES NOMINAL IN |
| Mounting Facility | UNTHREADED HOLE(S)UNTHREADED HOLE(S) |
| Center to Center Distance Between First and Second Mounting Holes | 0.875 INCHES NOMINAL0.875 INCHES NOMINAL IN |
| Material | PLASTIC |
| 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 |
|---|---|
| A51L20119-11 PRIMARY | Northrop Grumman Systems Corporation (USA) |
| Reference | Meaning |
|---|---|
| A51L20119-11 | 3/9 Design control — primary reference Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Northrop Grumman Aeronautics Systems |
| A51L20119-11 | 5/9 Secondary reference Northrop Grumman Systems Corporation |
NSN 5340-01-337-3973 is a Clamp,block,section, manufactured by Northrop Grumman Systems Corporation, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-337-3973 has 1 manufacturer part number on file: A51L20119-11 (Northrop Grumman Systems Corporation).
Key specifications for A51L20119-11: Mounting Hole Quantity: 22; Clamping Hole Quantity: 11; Distance From End to First Clamping Hole Center: 0.688 INCHES NOMINAL IN; Block Height: 0.380 INCHES NOMINAL0.380 INCHES NOMINAL IN. 13 specifications are 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.