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A1642 — NUT,SELF-LOCKING,CASTELLATED,HEX

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

A1642: NUT,SELF-LOCKING,CASTELLATED,HEX.

NUT,SELF-LOCKING,CASTELLATED,HEX. Key specifications include special_features: OCP, WITH BAGBY GREEN 67204 AND BLACK 67138, attachment_method: HOOK FASTENER TAPE, features_provided: EMBROIDERED, design_designation: 224TH FIELD ARTILLERY BRIGADE, VIRGINIA ARMY NATIONAL GUARD, department_designation: US ARMY, nondefinitive_spec/std_data: I TYPE AND I STYLE AND II CLASS. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-466-7986, 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
A1642
NSN: 5310-01-466-7986
NIINs: 014667986, 016658828
FSC: 5310 — Nuts and Washers
CAGE: 4K628 — OBERDORFER PUMPS INC (USA)
SPECIFICATIONS
special_featuresOCP, WITH BAGBY GREEN 67204 AND BLACK 67138
attachment_methodHOOK FASTENER TAPE
features_providedEMBROIDERED
design_designation224TH FIELD ARTILLERY BRIGADE, VIRGINIA ARMY NATIONAL GUARD
department_designationUS ARMY
nondefinitive_spec/std_dataI TYPE AND I STYLE AND II CLASS
NSN5310-01-466-7986
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: A1642 · 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 SERIES: UNEF
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 1.020 INCHES IN
•
THREAD CLASS: 2B
•
THREAD QUANTITY PER INCH: 1"-20
TECHNICAL CHARACTERISTICS
THREAD SERIESUNEF
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE1.020 INCHES IN
THREAD CLASS2B
END ITEM IDENTIFICATIONPUMP
THREAD QUANTITY PER INCH1"-20
SUBSTITUTES & CROSS-REFERENCES 1
0961-043-0030-P184-21Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is A1642?
A1642 is a NUT,SELF-LOCKING,CASTELLATED,HEX.
What parts can replace A1642?
There is 1 known substitute for A1642: 0961-043-0030-P184-21. Substitute compatibility should be verified for your specific system.
What is the NSN for A1642?
A1642 is cataloged in the U.S. Government catalog under NSN 5310-01-466-7986. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.