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A51L12054-33 — CLAMP,BLOCK,SECTION

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

A51L12054-33: CLAMP,BLOCK,SECTION.

The CLAMP,BLOCK,SECTION is a the manufacturer industrial component. Key specifications include block_height: 0.750 INCHES NOMINAL0.750 INCHES NOMINAL IN, overall_width: 0.500 INCHES NOMINAL0.500 INCHES NOMINAL IN, overall_length: 2.660 INCHES NOMINAL2.660 INCHES NOMINAL IN, style_designator: RECTANGULAR, mounting_facility: UNTHREADED HOLE(S)UNTHREADED HOLE(S), clamping_hole_diameter: 1.002 INCHES NOMINAL ALL HOLES IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-090-0499, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
A51L12054-33
NSN: 5340-01-090-0499
FSC: 5340 — Hardware, Commercial
CAGE: 79RG9 — NORTHROP GRUMMAN SYSTEMS CORPORATION (USA)
SPECIFICATIONS
block_height0.750 INCHES NOMINAL0.750 INCHES NOMINAL IN
overall_width0.500 INCHES NOMINAL0.500 INCHES NOMINAL IN
overall_length2.660 INCHES NOMINAL2.660 INCHES NOMINAL IN
style_designatorRECTANGULAR
mounting_facilityUNTHREADED HOLE(S)UNTHREADED HOLE(S)
clamping_hole_diameter1.002 INCHES NOMINAL ALL HOLES IN
clamping_hole_quantity11
mounting_hole_diameter0.271 INCHES MINIMUM AND 0.271 INCHES MINIMUM AND 0.278 INCHES MAXIMUM0.278 INCHES MAXIMUM IN
mounting_hole_quantity22
distance_from_end_to_first_clamping_hole_center1.330 INCHES NOMINAL IN
distance_from_end_to_first_mounting_hole_center0.520 INCHES NOMINAL IN
distance_from_center_of_mounting_hole_to_edge_along_the_width0.250 INCHES NOMINAL0.250 INCHES NOMINAL IN
NSN5340-01-090-0499
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: A51L12054-33 MFR: OEM ⚠ VERIFY BEFORE ORDERING Wrong material = failure. Viton for oil/fuel, EPDM for water/steam, Buna-N for general purpose, Silicone for food-grade. Chemical incompatibility causes swelling, brittleness, or rapid degradation ✓ BROKER TIP Durometer (hardness) affects sealing pressure tolerance. Higher Shore A = harder = higher pressure. Standard durometer is 70A — verify if application requires different hardness PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
MOUNTING HOLE QUANTITY: 22
•
CLAMPING HOLE QUANTITY: 11
•
DISTANCE FROM END TO FIRST CLAMPING HOLE CENTER: 1.330 INCHES NOMINAL IN
•
BLOCK HEIGHT: 0.750 INCHES NOMINAL0.750 INCHES NOMINAL IN
•
STYLE DESIGNATOR: RECTANGULAR
•
MOUNTING HOLE DIAMETER: 0.271 INCHES MINIMUM AND 0.271 INCHES MINIMUM AND 0.278 INCHES MAXIMUM0.278 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
MOUNTING HOLE QUANTITY22
CLAMPING HOLE QUANTITY11
DISTANCE FROM END TO FIRST CLAMPING HOLE CENTER1.330 INCHES NOMINAL IN
BLOCK HEIGHT0.750 INCHES NOMINAL0.750 INCHES NOMINAL IN
STYLE DESIGNATORRECTANGULAR
MOUNTING HOLE DIAMETER0.271 INCHES MINIMUM AND 0.271 INCHES MINIMUM AND 0.278 INCHES MAXIMUM0.278 INCHES MAXIMUM IN
OVERALL LENGTH2.660 INCHES NOMINAL2.660 INCHES NOMINAL IN
OVERALL WIDTH0.500 INCHES NOMINAL0.500 INCHES NOMINAL IN
CLAMPING HOLE DIAMETER1.002 INCHES NOMINAL ALL HOLES IN
DISTANCE FROM CENTER OF MOUNTING HOLE TO EDGE ALONG THE WIDTH0.250 INCHES NOMINAL0.250 INCHES NOMINAL IN
OTHER ITEMS IN FSC 5340 — Hardware, Commercial
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5340-00-000-0068 5340-00-000-0132 5340-00-000-8150 5340-00-001-1251 5340-00-001-1264 5340-00-001-1265 5340-00-001-1266 5340-00-001-1275
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is A51L12054-33?
A51L12054-33 is a CLAMP,BLOCK,SECTION.
What is the NSN for A51L12054-33?
A51L12054-33 is cataloged in the U.S. Government catalog under NSN 5340-01-090-0499. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.