PartsTable
Technical Data Sheet
Download PDF

66A91B022 — NUT,PLAIN,HEXAGON

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

66A91B022: NUT,PLAIN,HEXAGON.

The NUT,PLAIN,HEXAGON is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, nut_style: HEXAGON, nut_height: 0.190 INCHES NOMINAL IN, thread_class: 2B, thread_series: UN, thread_direction: RIGHT-HAND. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-702-8945, 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
66A91B022
NSN: 5310-00-702-8945
FSC: 5310 — Nuts and Washers
CAGE: 10001 — NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
materialSTEEL OVERALL
nut_styleHEXAGON
nut_height0.190 INCHES NOMINAL IN
thread_class2B
thread_seriesUN
thread_directionRIGHT-HAND
surface_treatmentCADMIUM OR CHROMIUM OVERALL
width_across_flats2.877 INCHES MINIMUM AND 2.937 INCHES MAXIMUM IN
nominal_thread_size2.000 INCHES IN
bearing_surface_typeFLAT
thread_quantity_per_inch12
NSN5310-00-702-8945
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 66A91B022 · 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: 2.877 INCHES MINIMUM AND 2.937 INCHES MAXIMUM IN
•
THREAD SERIES: UN
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 2.000 INCHES IN
•
NUT HEIGHT: 0.190 INCHES NOMINAL IN
•
SURFACE TREATMENT: CADMIUM OR CHROMIUM OVERALL
•
NUT STYLE: HEXAGON
•
THREAD CLASS: 2B
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS2.877 INCHES MINIMUM AND 2.937 INCHES MAXIMUM IN
THREAD SERIESUN
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE2.000 INCHES IN
NUT HEIGHT0.190 INCHES NOMINAL IN
SURFACE TREATMENTCADMIUM OR CHROMIUM OVERALL
NUT STYLEHEXAGON
THREAD CLASS2B
THREAD QUANTITY PER INCH12
MATERIALSTEEL OVERALL
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
No demilitarization required
Ready to buy 66A91B022?
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 66A91B022?
66A91B022 is a NUT,PLAIN,HEXAGON.
What is the NSN for 66A91B022?
66A91B022 is cataloged in the U.S. Government catalog under NSN 5310-00-702-8945. 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 — 66A91B022

✓ 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.