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421A12 — STRAP,RETAINING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

421A12: STRAP,RETAINING.

The STRAP,RETAINING is a the manufacturer industrial component. Key specifications include cushion: INCLUDED, material: ALUMINUM ALLOY 2024 AND ALUMINUM ALLOY 1230 LOCATION NOT OTHERWISE SPECIFIED, mounting_pad: NOT INCLUDED, overall_width: 0.500 INCHES MINIMUM AND 0.540 INCHES MAXIMUM IN, overall_length: 2.056 INCHES MINIMUM AND 2.120 INCHES MAXIMUM IN, special_features: LEFT HOLE CONTAINS HOLLOW RIVET. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-042-3348, 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
421A12
NSN: 5340-01-042-3348
FSC: 5340 — Hardware, Commercial
CAGE: 83930 — TRANSDIGM INC DBA ADEL WIGGINS GROUP DIV ADEL WIGGINS (USA)
SPECIFICATIONS
cushionINCLUDED
materialALUMINUM ALLOY 2024 AND ALUMINUM ALLOY 1230 LOCATION NOT OTHERWISE SPECIFIED
mounting_padNOT INCLUDED
overall_width0.500 INCHES MINIMUM AND 0.540 INCHES MAXIMUM IN
overall_length2.056 INCHES MINIMUM AND 2.120 INCHES MAXIMUM IN
special_featuresLEFT HOLE CONTAINS HOLLOW RIVET
style_designatorSADDLE ARCH
material_thickness0.040 INCHES NOMINAL IN
mounting_hole_size0.194 INCHES MINIMUM AND 0.214 INCHES MAXIMUM IN
inside_diameter/arch_length0.760 INCHES MINIMUM AND 0.780 INCHES MAXIMUM IN
material_document_and_classificationAMS 3651 ASSN STD SINGLE MATERIAL RESPONSE CUSHIONING
distance_between_mounting_hole_centers1.620 INCHES NOMINAL IN
NSN5340-01-042-3348
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 421A12 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 SIZE: 0.194 INCHES MINIMUM AND 0.214 INCHES MAXIMUM IN
•
DISTANCE BETWEEN MOUNTING HOLE CENTERS: 1.620 INCHES NOMINAL IN
•
MOUNTING PAD: NOT INCLUDED
•
STYLE DESIGNATOR: SADDLE ARCH
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 3651 ASSN STD SINGLE MATERIAL RESPONSE CUSHIONING
•
MATERIAL THICKNESS: 0.040 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
MOUNTING HOLE SIZE0.194 INCHES MINIMUM AND 0.214 INCHES MAXIMUM IN
DISTANCE BETWEEN MOUNTING HOLE CENTERS1.620 INCHES NOMINAL IN
MOUNTING PADNOT INCLUDED
STYLE DESIGNATORSADDLE ARCH
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 3651 ASSN STD SINGLE MATERIAL RESPONSE CUSHIONING
OVERALL LENGTH2.056 INCHES MINIMUM AND 2.120 INCHES MAXIMUM IN
OVERALL WIDTH0.500 INCHES MINIMUM AND 0.540 INCHES MAXIMUM IN
MATERIAL THICKNESS0.040 INCHES NOMINAL IN
CUSHIONINCLUDED
DISTANCE BETWEEN BASE AND INSIDE OF ARCH0.832 INCHES MINIMUM AND 0.852 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 3
TA4C36-14Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
44SC15D12Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
JM44SC14D12TReference document
Same NSN cross-reference
Reference document — Secondary reference
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 421A12?
421A12 is a STRAP,RETAINING.
What parts can replace 421A12?
There are 3 known substitutes for 421A12: TA4C36-14, 44SC15D12, JM44SC14D12T. Substitute compatibility should be verified for your specific system.
What is the NSN for 421A12?
421A12 is cataloged in the U.S. Government catalog under NSN 5340-01-042-3348. This indicates validated use in U.S. government and defense supply chains.
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