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Technical Data Sheet
PartsTable / COMPONENT / 4446A
4446A ✓ 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 PIN,TRANSMISSION SH is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-423-1780, 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
4446A
NSN: 5315-00-423-1780
FSC: 5315
CAGE: 08018 — BORG-WARNER CORP (USA)
SPECIFICATIONS
Part Number4446A
NSN5315-00-423-1780
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 4446A · 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
556890Interchangeable
interchangeable cross-reference
interchangeable
1281-3018Interchangeable
interchangeable cross-reference
interchangeable
H57324PC30Interchangeable
interchangeable cross-reference
interchangeable
D8523841REVAPC42Interchangeable
interchangeable cross-reference
interchangeable
92-5092REV10Interchangeable
interchangeable cross-reference
interchangeable
12716Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 4446A?
4446A is a PIN,TRANSMISSION SH.
What parts can replace 4446A?
There are 17 known substitutes for 4446A: 556890, 1281-3018, H57324PC30 and 14 more. Substitute compatibility should be verified for your specific system.
Is 4446A still available?
4446A 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