PartsTable
Technical Data Sheet
Download PDF

166276PC6 — NUT,PLAIN,ROUND

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

166276PC6: NUT,PLAIN,ROUND.

The NUT,PLAIN,ROUND is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1117 OVERALL, nut_style: ROUND, nut_diameter: 1.750 INCHES NOMINAL IN, thread_class: 2B, nut_thickness: 0.620 INCHES NOMINAL IN, thread_series: UNF. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-221-3871, 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
166276PC6
NSN: 5310-00-221-3871
FSC: 5310 — Nuts and Washers
CAGE: 10001 — NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
materialSTEEL COMP 1117 OVERALL
nut_styleROUND
nut_diameter1.750 INCHES NOMINAL IN
thread_class2B
nut_thickness0.620 INCHES NOMINAL IN
thread_seriesUNF
thread_directionRIGHT-HAND
drive_point_depth0.080 INCHES NOMINAL IN
drive_point_width0.187 INCHES MINIMUM AND 0.192 INCHES MAXIMUM IN
nominal_thread_size1.125 INCHES IN
counterbore_diameter1.220 INCHES NOMINAL NUT IN
drive_point_quantity4
NSN5310-00-221-3871
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 166276PC6 · 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: UNF
•
MATERIAL DOCUMENT AND CLASSIFICATION: SAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
NUT COUNTERBORE DEPTH: 0.180 INCHES NOMINAL NUT IN
•
DRIVE POINT WIDTH: 0.187 INCHES MINIMUM AND 0.192 INCHES MAXIMUM IN
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 1.125 INCHES IN
•
NUT DIAMETER: 1.750 INCHES NOMINAL IN
•
COUNTERBORE DIAMETER: 1.220 INCHES NOMINAL NUT IN
TECHNICAL CHARACTERISTICS
THREAD SERIESUNF
MATERIAL DOCUMENT AND CLASSIFICATIONSAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NUT COUNTERBORE DEPTH0.180 INCHES NOMINAL NUT IN
DRIVE POINT WIDTH0.187 INCHES MINIMUM AND 0.192 INCHES MAXIMUM IN
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE1.125 INCHES IN
NUT DIAMETER1.750 INCHES NOMINAL IN
COUNTERBORE DIAMETER1.220 INCHES NOMINAL NUT IN
DRIVE POINT DEPTH0.080 INCHES NOMINAL IN
NUT THICKNESS0.620 INCHES NOMINAL IN
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

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — stock exhausted; no further procurementNo demilitarization required
Ready to buy 166276PC6?
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 166276PC6?
166276PC6 is a NUT,PLAIN,ROUND.
What is the NSN for 166276PC6?
166276PC6 is cataloged in the U.S. Government catalog under NSN 5310-00-221-3871. 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 — 166276PC6

✓ 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.