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12941478 — CLAMP,BLOCK,SECTION

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

12941478: CLAMP,BLOCK,SECTION.

The CLAMP,BLOCK,SECTION is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY 6061 OR ALUMINUM ALLOY 6063, block_height: 0.625 INCHES NOMINAL0.625 INCHES NOMINAL IN, overall_width: 0.560 INCHES MINIMUM AND 0.560 INCHES MINIMUM AND 0.680 INCHES MAXIMUM0.680 INCHES MAXIMUM IN, overall_length: 4.190 INCHES MINIMUM AND 4.190 INCHES MINIMUM AND 4.310 INCHES MAXIMUM4.310 INCHES MAXIMUM IN, style_designator: RECTANGULAR, mounting_facility: UNTHREADED HOLE(S)UNTHREADED HOLE(S). This part is cataloged in the U.S.

Government catalog under NSN 5340-01-355-2788, 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
12941478
NSN: 5340-01-355-2788
FSC: 5340 — Hardware, Commercial
CAGE: 19200 — COMBAT CAPABILITIES DEVELOPMENT COMMAND (CCDC) ARMAMENTS CENTER DBA CCDC DIV LOGISTICS RESEARCH AND ENGINEERING DIRECTORATE (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 6061 OR ALUMINUM ALLOY 6063
block_height0.625 INCHES NOMINAL0.625 INCHES NOMINAL IN
overall_width0.560 INCHES MINIMUM AND 0.560 INCHES MINIMUM AND 0.680 INCHES MAXIMUM0.680 INCHES MAXIMUM IN
overall_length4.190 INCHES MINIMUM AND 4.190 INCHES MINIMUM AND 4.310 INCHES MAXIMUM4.310 INCHES MAXIMUM IN
style_designatorRECTANGULAR
mounting_facilityUNTHREADED HOLE(S)UNTHREADED HOLE(S)
clamping_hole_diameter0.560 INCHES NOMINAL ALL HOLES IN
clamping_hole_quantity44
mounting_hole_diameter0.342 INCHES MINIMUM AND 0.342 INCHES MINIMUM AND 0.372 INCHES MAXIMUM0.372 INCHES MAXIMUM IN
mounting_hole_quantity22
material_document_and_classificationQQ-A-200/8 T6 OR T6511 FED SPEC 1ST MATERIAL RESPONSE OR QQ-A-250/11 T651 FED SPEC 1ST MATERIAL RESPONSE OR QQ-A-200/9 T5 FED SPEC 2ND MATERIAL RESPONSE
distance_from_end_to_first_clamping_hole_center0.499 INCHES NOMINAL IN
NSN5340-01-355-2788
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 12941478 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: 44
•
CENTER TO CENTER DISTANCE BETWEEN FIRST AND FOURTH CLAMPING HOLES: 3.235 INCHES MINIMUM AND 3.265 INCHES MAXIMUM IN
•
DISTANCE FROM END TO FIRST CLAMPING HOLE CENTER: 0.499 INCHES NOMINAL IN
•
BLOCK HEIGHT: 0.625 INCHES NOMINAL0.625 INCHES NOMINAL IN
•
STYLE DESIGNATOR: RECTANGULAR
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-A-200/8 T6 OR T6511 FED SPEC 1ST MATERIAL RESPONSE OR QQ-A-250/11 T651 FED SPEC 1ST MATERIAL RESPONSE OR QQ-A-200/9 T5 FED SPEC 2ND MATERIAL RESPONSE
•
MOUNTING HOLE DIAMETER: 0.342 INCHES MINIMUM AND 0.342 INCHES MINIMUM AND 0.372 INCHES MAXIMUM0.372 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
MOUNTING HOLE QUANTITY22
CLAMPING HOLE QUANTITY44
CENTER TO CENTER DISTANCE BETWEEN FIRST AND FOURTH CLAMPING HOLES3.235 INCHES MINIMUM AND 3.265 INCHES MAXIMUM IN
DISTANCE FROM END TO FIRST CLAMPING HOLE CENTER0.499 INCHES NOMINAL IN
BLOCK HEIGHT0.625 INCHES NOMINAL0.625 INCHES NOMINAL IN
STYLE DESIGNATORRECTANGULAR
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-200/8 T6 OR T6511 FED SPEC 1ST MATERIAL RESPONSE OR QQ-A-250/11 T651 FED SPEC 1ST MATERIAL RESPONSE OR QQ-A-200/9 T5 FED SPEC 2ND MATERIAL RESPONSE
MOUNTING HOLE DIAMETER0.342 INCHES MINIMUM AND 0.342 INCHES MINIMUM AND 0.372 INCHES MAXIMUM0.372 INCHES MAXIMUM IN
OVERALL LENGTH4.190 INCHES MINIMUM AND 4.190 INCHES MINIMUM AND 4.310 INCHES MAXIMUM4.310 INCHES MAXIMUM IN
OVERALL WIDTH0.560 INCHES MINIMUM AND 0.560 INCHES MINIMUM AND 0.680 INCHES MAXIMUM0.680 INCHES MAXIMUM 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: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 12941478?
12941478 is a CLAMP,BLOCK,SECTION.
What is the NSN for 12941478?
12941478 is cataloged in the U.S. Government catalog under NSN 5340-01-355-2788. 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.