The FRAME,ACCESS HOLE is a the manufacturer industrial component. Key specifications include mounting_method: THREADED HOLE(S), overall_diameter: 4.180 INCHES NOMINAL IN, aperture_diameter: 3.700 INCHES NOMINAL IN, overall_thickness: 0.036 INCHES NOMINAL IN, surface_treatment: PASSIVATE OVERALL, nominal_thread_size: 0.250 INCHES IN. This part is cataloged in the U.S.
Government catalog under NSN 5340-01-061-0797, 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
12257531
NSN:5340-01-061-0797 FSC:5340 — Hardware, Commercial CAGE:19207 — U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM (USA)
SPECIFICATIONS
mounting_method
THREADED HOLE(S)
overall_diameter
4.180 INCHES NOMINAL IN
special_features
1 EXTERNAL FLAT 1.970 FROM APERTURE CENTER; 1 EXTERNAL FLAT 81 DEG FROMFIRST; 1 INTERNAL FLAT 1.640 FROM APERTURE CENTER PARALLEL TO 1ST EXT FLAT
aperture_diameter
3.700 INCHES NOMINAL IN
overall_thickness
0.036 INCHES NOMINAL IN
surface_treatment
PASSIVATE OVERALL
nominal_thread_size
0.250 INCHES IN
thread_quantity_per_inch
20
mounting_facility_diameter
0.281 INCHES NOMINAL IN
surface_treatment_document_and_classification
MIL-STD-171,FINISH 5.4.1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN
5340-01-061-0797
COMPONENT DIAGRAM
KEY FEATURES
•
MOUNTING FACILITY DIAMETER: 0.281 INCHES NOMINAL IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-STD-171,FINISH 5.4.1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
•
OVERALL DIAMETER: 4.180 INCHES NOMINAL IN
•
MOUNTING METHOD: THREADED HOLE(S)
•
OVERALL THICKNESS: 0.036 INCHES NOMINAL IN
•
APERTURE DIAMETER: 3.700 INCHES NOMINAL IN
•
NOMINAL THREAD SIZE: 0.250 INCHES IN
TECHNICAL CHARACTERISTICS
MOUNTING FACILITY DIAMETER
0.281 INCHES NOMINAL IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION
MIL-STD-171,FINISH 5.4.1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
OVERALL DIAMETER
4.180 INCHES NOMINAL IN
MOUNTING METHOD
THREADED HOLE(S)
OVERALL THICKNESS
0.036 INCHES NOMINAL IN
APERTURE DIAMETER
3.700 INCHES NOMINAL IN
NOMINAL THREAD SIZE
0.250 INCHES IN
SPECIAL FEATURES
1 EXTERNAL FLAT 1.970 FROM APERTURE CENTER; 1 EXTERNAL FLAT 81 DEG FROMFIRST; 1 INTERNAL FLAT 1.640 FROM APERTURE CENTER PARALLEL TO 1ST EXT FLAT
SURFACE TREATMENT
PASSIVATE OVERALL
THREAD QUANTITY PER INCH
20
OTHER ITEMS IN FSC 5340 — Hardware, Commercial
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
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FREQUENTLY ASKED QUESTIONS
What is 12257531?
12257531 is a FRAME,ACCESS HOLE.
What is the NSN for 12257531?
12257531 is cataloged in the U.S. Government catalog under NSN 5340-01-061-0797. This indicates validated use in U.S. government and defense supply chains.
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