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Technical Data Sheet
PartsTable / COMPONENT / 291672
291672 ✓ 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 SUPPORT ASSEMBLY,ENGINE is a the manufacturer industrial component. Key specifications include fsc_application_data: GASOLINE ENGINE COMPONENTS,NONAIRCRAFT, end_item_identification: ENGINE,GASOLINE,BRIGGS AND STRATTON CO,MODEL 23B, general_characteristics_item_description: STEEL,RD W/8 FINS,4 MTG HOLES,ONE CENTER HOLE. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-262-8283, 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
291672
NSN: 5310-00-262-8283
FSC: 5310
CAGE: 24617 — GENERAL MOTORS CORP (USA)
SPECIFICATIONS
fsc_application_dataGASOLINE ENGINE COMPONENTS,NONAIRCRAFT
end_item_identificationENGINE,GASOLINE,BRIGGS AND STRATTON CO,MODEL 23B
general_characteristics_item_descriptionSTEEL,RD W/8 FINS,4 MTG HOLES,ONE CENTER HOLE
NSN5310-00-262-8283
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 291672 · 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
•
THREAD CLASS: 2B
•
NOMINAL THREAD SIZE: 0.625 INCHES IN
•
THREAD SERIES: UN
•
THREAD QUANTITY PER INCH: 16
•
BEARING SURFACE TYPE: WASHER FACED
•
MATERIAL: STEEL OVERALL
•
NUT HEIGHT: 0.625 INCHES NOMINAL IN
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS (FLIS)
THREAD CLASS2B
NOMINAL THREAD SIZE0.625 INCHES IN
THREAD SERIESUN
THREAD QUANTITY PER INCH16
BEARING SURFACE TYPEWASHER FACED
MATERIALSTEEL OVERALL
NUT HEIGHT0.625 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND
NUT STYLESLOTTED, HEXAGON
WIDTH ACROSS FLATS1.062 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
278-1784-00Interchangeable
interchangeable cross-reference
interchangeable
278-1784-000Interchangeable
interchangeable cross-reference
interchangeable
18346Interchangeable
interchangeable cross-reference
interchangeable
291672Interchangeable
interchangeable cross-reference
interchangeable
292425Interchangeable
interchangeable cross-reference
interchangeable
123SCSA606-7Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 291672?
291672 is a SUPPORT ASSEMBLY,ENGINE.
What parts can replace 291672?
There are 16 known substitutes for 291672: 278-1784-00, 278-1784-000, 18346 and 13 more. Substitute compatibility should be verified for your specific system.
Is 291672 still available?
291672 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