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Technical Data Sheet
11A7222 ✓ Verified by PartsTable
· NUT WASHER
WHAT YOU NEED TO KNOW
Match nut grade to bolt grade for full strength Lock nuts prevent loosening under vibration
Don't mix grades — weakens the joint
PRODUCT OVERVIEW

The KEY,MACHINE is a the manufacturer industrial component. Key specifications include material: STEEL COMP 3135 OVERALL, overall_width: 0.495 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN, overall_height: 0.370 INCHES MINIMUM AND 0.380 INCHES MAXIMUM IN, overall_length: 3.000 INCHES NOMINAL IN, hardness_rating: 40.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM OVERALL, style_designator: PLAIN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-281-8706, 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
11A7222
NSN: 5315-00-281-8706
FSC: 5315
CAGE: 95201 — NAPCO INTERNATIONAL LLC DBA NAPCO INTERNATIONAL INC (USA)
SPECIFICATIONS
materialSTEEL COMP 3135 OVERALL
overall_width0.495 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN
overall_height0.370 INCHES MINIMUM AND 0.380 INCHES MAXIMUM IN
overall_length3.000 INCHES NOMINAL IN
hardness_rating40.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM OVERALL
style_designatorPLAIN
starting_edge_shapeSTRAIGHT
material_document_and_classificationSAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN5315-00-281-8706
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 11A7222 · OEM ⚠ VERIFY BEFORE ORDERING Grade matters for torque spec — don't mix grades. A Grade 5 nut on a Grade 8 bolt weakens the joint. Lock nuts, wing nuts, and castle nuts are NOT interchangeable with standard hex ✓ BROKER TIP Match nut to bolt thread class and material. Stainless bolt + zinc nut = galvanic corrosion. Always verify finish matches (plain, zinc, hot-dip galvanized) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
HARDNESS RATING: 40.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION: SAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
STARTING EDGE SHAPE: STRAIGHT
STYLE DESIGNATOR: PLAIN
MATERIAL: STEEL COMP 3135 OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL LENGTH3.000 INCHES NOMINAL IN
HARDNESS RATING40.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONSAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
STARTING EDGE SHAPESTRAIGHT
OVERALL HEIGHT0.370 INCHES MINIMUM AND 0.380 INCHES MAXIMUM IN
OVERALL WIDTH0.495 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN
STYLE DESIGNATORPLAIN
MATERIALSTEEL COMP 3135 OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
1866Interchangeable
interchangeable cross-reference
interchangeable
LTX1866Interchangeable
interchangeable cross-reference
interchangeable
2107548Interchangeable
interchangeable cross-reference
interchangeable
31G128Interchangeable
Same NIIN cross-reference
interchangeable
16X48Interchangeable
Same NIIN cross-reference
interchangeable
243642Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 11A7222?
11A7222 is a KEY,MACHINE.
What parts can replace 11A7222?
There are 8 known substitutes for 11A7222: 1866, LTX1866, 2107548 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 11A7222?
11A7222 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-281-8706. This indicates validated use in U.S. government and defense supply chains.
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