PartsTable
Technical Data Sheet
Download PDF

3-8-16-123 — NUT,PLAIN,SPLINE

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

3-8-16-123: NUT,PLAIN,SPLINE.

The NUT,PLAIN,SPLINE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, nut_style: SPLINE, nut_height: 0.310 INCHES NOMINAL IN, nut_diameter: 0.688 INCHES NOMINAL IN, pilot_length: 0.117 INCHES NOMINAL IN, thread_class: 2B. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-801-6587, 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
3-8-16-123
NSN: 5310-00-801-6587
FSC: 5310 — Nuts and Washers
CAGE: 75497 — LAMSON AND SESSIONS CO THE (USA)
SPECIFICATIONS
materialSTEEL OVERALL
nut_styleSPLINE
nut_height0.310 INCHES NOMINAL IN
nut_diameter0.688 INCHES NOMINAL IN
pilot_length0.117 INCHES NOMINAL IN
thread_class2B
thread_seriesUNIFIED NATIONAL COARSE (UNC)
pilot_diameter0.530 INCHES MINIMUM AND 0.535 INCHES MAXIMUM IN
thread_directionRIGHT-HAND
surface_treatmentCADMIUM OR ZINC OR CHROMATE OVERALL
nominal_thread_size0.375 INCHES IN
thread_quantity_per_inch16
NSN5310-00-801-6587
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 3-8-16-123 · 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
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416 FED SPEC 1ST TREATMENT RESPONSE OR ASTM B633 ASSN STD 2ND TREATMENT RESPONSE OVERALL
•
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 0.375 INCHES IN
•
NUT DIAMETER: 0.688 INCHES NOMINAL IN
•
PILOT DIAMETER: 0.530 INCHES MINIMUM AND 0.535 INCHES MAXIMUM IN
•
PILOT LENGTH: 0.117 INCHES NOMINAL IN
•
NUT HEIGHT: 0.310 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416 FED SPEC 1ST TREATMENT RESPONSE OR ASTM B633 ASSN STD 2ND TREATMENT RESPONSE OVERALL
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.375 INCHES IN
NUT DIAMETER0.688 INCHES NOMINAL IN
PILOT DIAMETER0.530 INCHES MINIMUM AND 0.535 INCHES MAXIMUM IN
PILOT LENGTH0.117 INCHES NOMINAL IN
NUT HEIGHT0.310 INCHES NOMINAL IN
SURFACE TREATMENTCADMIUM OR ZINC OR CHROMATE OVERALL
NUT STYLESPLINE
SUBSTITUTES & CROSS-REFERENCES 2
7044630Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LN1012Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
Ready to buy 3-8-16-123?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 3-8-16-123?
3-8-16-123 is a NUT,PLAIN,SPLINE.
What parts can replace 3-8-16-123?
There are 2 known substitutes for 3-8-16-123: 7044630, LN1012. Substitute compatibility should be verified for your specific system.
What is the NSN for 3-8-16-123?
3-8-16-123 is cataloged in the U.S. Government catalog under NSN 5310-00-801-6587. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 3-8-16-123

✓ 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.