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Technical Data Sheet
PartsTable / COMPONENT / 11A72
11A72 ✓ 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 NUT,PLAIN,OCTAGON is a the manufacturer industrial component. Key specifications include inclosure_type: ENCASED, basic_shape_style: RECTANGULAR OR SQUARE, frequency_per_channel: 1.0 GIGAHERTZ MAXIMUM 1ST OPERATING CHANNEL AND 1.0 GIGAHERTZ MAXIMUM 2ND OPERATING CHANNEL. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-275-3599, 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
11A72
NSN: 5310-00-275-3599
FSC: 5310
CAGE: 95201 — NAPCO INTERNATIONAL LLC DBA NAPCO INTERNATIONAL INC (USA)
SPECIFICATIONS
inclosure_typeENCASED
basic_shape_styleRECTANGULAR OR SQUARE
frequency_per_channel1.0 GIGAHERTZ MAXIMUM 1ST OPERATING CHANNEL AND 1.0 GIGAHERTZ MAXIMUM 2ND OPERATING CHANNEL
individual_section_quantity1
NSN5310-00-275-3599
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 11A72 · 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
•
MATERIAL: STEEL COMP 1018 OR STEEL COMP 1022 OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-633 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
NOMINAL THREAD SIZE: 2.625 INCHES IN
•
THREAD QUANTITY PER INCH: 16
•
THREAD SERIES: UN
•
BEARING SURFACE TYPE: CHAMFERED OR WASHER FACED
•
NUT HEIGHT: 0.372 INCHES MINIMUM AND 0.377 INCHES MAXIMUM IN
•
WIDTH ACROSS FLATS: 3.240 INCHES MINIMUM AND 3.260 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL COMP 1018 OR STEEL COMP 1022 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-633 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD SIZE2.625 INCHES IN
THREAD QUANTITY PER INCH16
THREAD SERIESUN
BEARING SURFACE TYPECHAMFERED OR WASHER FACED
NUT HEIGHT0.372 INCHES MINIMUM AND 0.377 INCHES MAXIMUM IN
WIDTH ACROSS FLATS3.240 INCHES MINIMUM AND 3.260 INCHES MAXIMUM IN
THREAD DIRECTIONRIGHT-HAND
NUT STYLEPLAIN, OCTAGON
VERIFIED SUBSTITUTES & CROSS-REFERENCES 22
2G8HInterchangeable
interchangeable cross-reference
interchangeable
2335Interchangeable
interchangeable cross-reference
interchangeable
00012800208753Interchangeable
interchangeable cross-reference
interchangeable
642Interchangeable
interchangeable cross-reference
interchangeable
DL42Interchangeable
interchangeable cross-reference
interchangeable
04306-0285Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 11A72?
11A72 is a NUT,PLAIN,OCTAGON.
What parts can replace 11A72?
There are 22 known substitutes for 11A72: 2G8H, 2335, 00012800208753 and 19 more. Substitute compatibility should be verified for your specific system.
Is 11A72 still available?
11A72 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026