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SN168 — NUT,SELF-LOCKING,SPLINE

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

SN168: NUT,SELF-LOCKING,SPLINE.

The NUT,SELF-LOCKING,SPLINE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, nut_height: 0.277 INCHES NOMINAL IN, temp_rating: 550.0 FAHRENHEIT NOMINAL DEGF, pilot_length: 0.105 INCHES NOMINAL IN, thread_class: 2B, thread_series: UNIFIED NATIONAL COARSE (UNC). This part is cataloged in the U.S.

Government catalog under NSN 5310-00-722-8117, 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
SN168
NSN: 5310-00-722-8117
FSC: 5310 — Nuts and Washers
CAGE: 72914 — GRIMES AEROSPACE COMPANY (USA)
SPECIFICATIONS
materialSTEEL OVERALL
nut_height0.277 INCHES NOMINAL IN
temp_rating550.0 FAHRENHEIT NOMINAL DEGF
pilot_length0.105 INCHES NOMINAL IN
thread_class2B
thread_seriesUNIFIED NATIONAL COARSE (UNC)
pilot_diameter0.222 INCHES NOMINAL IN
locking_featurePREVAILING TORQUE ALL METAL DESIGN
thread_directionRIGHT-HAND
surface_treatmentCADMIUM OVERALL
nominal_thread_size0.138 INCHES IN
thread_quantity_per_inch32
NSN5310-00-722-8117
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: SN168 · 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: UNIFIED NATIONAL COARSE (UNC)
•
TEMP RATING: 550.0 FAHRENHEIT NOMINAL DEGF
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 0.138 INCHES IN
•
PILOT DIAMETER: 0.222 INCHES NOMINAL IN
•
PILOT LENGTH: 0.105 INCHES NOMINAL IN
•
LOCKING FEATURE: PREVAILING TORQUE ALL METAL DESIGN
•
NUT HEIGHT: 0.277 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
TEMP RATING550.0 FAHRENHEIT NOMINAL DEGF
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.138 INCHES IN
PILOT DIAMETER0.222 INCHES NOMINAL IN
PILOT LENGTH0.105 INCHES NOMINAL IN
LOCKING FEATUREPREVAILING TORQUE ALL METAL DESIGN
NUT HEIGHT0.277 INCHES NOMINAL IN
SURFACE TREATMENTCADMIUM OVERALL
THREAD CLASS2B
SUBSTITUTES & CROSS-REFERENCES 3
1008668-1Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
22FP3-632Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
81013Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is SN168?
SN168 is a NUT,SELF-LOCKING,SPLINE.
What parts can replace SN168?
There are 3 known substitutes for SN168: 1008668-1, 22FP3-632, 81013. Substitute compatibility should be verified for your specific system.
What is the NSN for SN168?
SN168 is cataloged in the U.S. Government catalog under NSN 5310-00-722-8117. 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.