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7-659-000216 — NUT,SELF-LOCKING,HEXAGON

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

7-659-000216: NUT,SELF-LOCKING,HEXAGON.

The NUT,SELF-LOCKING,HEXAGON is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, nut_style: HEXAGON, nut_height: 1.245 INCHES MINIMUM AND 1.317 INCHES MAXIMUM IN, thread_class: 2B, thread_series: UNF, hardness_rating: 28.0 ROCKWELL C NOMINAL. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-170-8514, 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
7-659-000216
NSN: 5310-01-170-8514
FSC: 5310 — Nuts and Washers
CAGE: 0MKW7 — MINNPAR, LLC DBA MINNPAR (USA)
SPECIFICATIONS
materialSTEEL OVERALL
nut_styleHEXAGON
nut_height1.245 INCHES MINIMUM AND 1.317 INCHES MAXIMUM IN
thread_class2B
thread_seriesUNF
hardness_rating28.0 ROCKWELL C NOMINAL
locking_featurePREVAILING TORQUE WITH NONMETALLIC INSERT
thread_directionRIGHT-HAND
width_across_flats2.250 INCHES NOMINAL IN
nominal_thread_size1.500 INCHES IN
bearing_surface_typeCHAMFERED
thread_quantity_per_inch12
NSN5310-01-170-8514
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 7-659-000216 · 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
•
WIDTH ACROSS FLATS: 2.250 INCHES NOMINAL IN
•
THREAD SERIES: UNF
•
HARDNESS RATING: 28.0 ROCKWELL C NOMINAL
•
MATERIAL DOCUMENT AND CLASSIFICATION: IFI 100,GR. A.,FSCM 12361 MFR REF SINGLE MATERIAL RESPONSE OVERALL
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 1.500 INCHES IN
•
LOCKING FEATURE: PREVAILING TORQUE WITH NONMETALLIC INSERT
•
NUT HEIGHT: 1.245 INCHES MINIMUM AND 1.317 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS2.250 INCHES NOMINAL IN
THREAD SERIESUNF
HARDNESS RATING28.0 ROCKWELL C NOMINAL
MATERIAL DOCUMENT AND CLASSIFICATIONIFI 100,GR. A.,FSCM 12361 MFR REF SINGLE MATERIAL RESPONSE OVERALL
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE1.500 INCHES IN
LOCKING FEATUREPREVAILING TORQUE WITH NONMETALLIC INSERT
NUT HEIGHT1.245 INCHES MINIMUM AND 1.317 INCHES MAXIMUM IN
NUT STYLEHEXAGON
THREAD CLASS2B
OTHER ITEMS IN FSC 5310 — Nuts and Washers
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5310-00-000-0040 5310-00-000-0077 5310-00-000-0079 5310-00-000-1146 5310-00-000-3815 5310-00-000-4532 5310-00-000-4540
SUBSTITUTES & CROSS-REFERENCES 1
2CD776Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 7-659-000216?
7-659-000216 is a NUT,SELF-LOCKING,HEXAGON.
What parts can replace 7-659-000216?
There is 1 known substitute for 7-659-000216: 2CD776. Substitute compatibility should be verified for your specific system.
What is the NSN for 7-659-000216?
7-659-000216 is cataloged in the U.S. Government catalog under NSN 5310-01-170-8514. 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.