PartsTable
Technical Data Sheet
20501-7 ✓ Verified by PartsTable
IMC Toys · 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 BOLT,SQUARE NECK is a IMC Toys industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-012-0622, 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
20501-7
NSN: 5310-00-012-0622
FSC: 5310
CAGE: 64547 — HONEYWELL INTERNATIONAL, INC DIV AEROSPACE-TUCSON (USA)
SPECIFICATIONS
Part Number20501-7
ManufacturerIMC Toys
NSN5310-00-012-0622
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 20501-7 · IMC Toys ⚠ 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
NUT STYLE: HEXAGON
NUT HEIGHT: 0.117 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN
WIDTH ACROSS FLATS: 0.332 INCHES MINIMUM AND 0.344 INCHES MAXIMUM IN
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
BEARING SURFACE TYPE: FLAT
NOMINAL THREAD SIZE: 0.164 INCHES IN
THREAD QUANTITY PER INCH: 32
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
NUT STYLEHEXAGON
NUT HEIGHT0.117 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN
WIDTH ACROSS FLATS0.332 INCHES MINIMUM AND 0.344 INCHES MAXIMUM IN
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
BEARING SURFACE TYPEFLAT
NOMINAL THREAD SIZE0.164 INCHES IN
THREAD QUANTITY PER INCH32
MATERIALSTEEL OVERALL
THREAD CLASS2B
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 31
4340Interchangeable
interchangeable cross-reference
interchangeable
PDG4340Interchangeable
interchangeable cross-reference
interchangeable
6024Interchangeable
interchangeable cross-reference
interchangeable
MS90725-5Interchangeable
interchangeable cross-reference
interchangeable
1-4-20X5-8Interchangeable
interchangeable cross-reference
interchangeable
P-H-31Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 20501-7?
20501-7 is a BOLT,SQUARE NECK manufactured by IMC Toys.
What parts can replace 20501-7?
There are 31 known substitutes for 20501-7: 4340, PDG4340, 6024 and 28 more. Substitute compatibility should be verified for your specific system.
Is 20501-7 still available?
20501-7 is currently cancelled.
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