PartsTable
Technical Data Sheet
PartsTable / COMPONENT / D2500FF ITEM 27, 28
D2500FF ITEM 27, 28 ✓ Verified by PartsTable
— · NUT WASHER
WHAT YOU NEED TO KNOW
Match nut grade to bolt grade for full strength Lock nuts prevent loosening under vibration
Don't mix grades — weakens the joint
PRODUCT OVERVIEW

The D2500FF ITEM 27, 28 is a the manufacturer industrial component. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-372-2666, 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
D2500FF ITEM 27, 28
NSN: 5310-01-372-2666
FSC: 5310
CAGE: 65079 — DANCO VALVE COMPANY (USA)
SPECIFICATIONS
Part NumberD2500FF ITEM 27, 28
NSN5310-01-372-2666
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: D2500FF ITEM 27, 28 · 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
•
SPECIFICATION/STANDARD DATA: 81349--1222N1W8C20SDNN GOVERNMENT SPECIFICATION
•
NOMINAL THREAD SIZE: 0.500 INCHES IN
•
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
•
BEARING SURFACE TYPE: WASHER FACED
•
HARDNESS RATING: 95.0 ROCKWELL B MINIMUM
•
THREAD QUANTITY PER INCH: 13
•
MATERIAL: STEEL COMP 316 OVERALL
•
THREAD CLASS: 2B
TECHNICAL CHARACTERISTICS (FLIS)
SPECIFICATION/STANDARD DATA81349--1222N1W8C20SDNN GOVERNMENT SPECIFICATION
NOMINAL THREAD SIZE0.500 INCHES IN
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
BEARING SURFACE TYPEWASHER FACED
HARDNESS RATING95.0 ROCKWELL B MINIMUM
THREAD QUANTITY PER INCH13
MATERIALSTEEL COMP 316 OVERALL
THREAD CLASS2B
NUT HEIGHT0.427 INCHES MINIMUM AND 0.448 INCHES MAXIMUM IN
THREAD DIRECTIONRIGHT-HAND
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
166-14Interchangeable
C0ver Assembly,brid
interchangeable
F100633Interchangeable
interchangeable cross-reference
interchangeable
1488884Interchangeable
interchangeable cross-reference
interchangeable
ST32D19-10Interchangeable
interchangeable cross-reference
interchangeable
ST32D19Interchangeable
interchangeable cross-reference
interchangeable
115406Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
Ready to buy D2500FF ITEM 27, 28?
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 D2500FF ITEM 27, 28?
D2500FF ITEM 27, 28 is a D2500FF ITEM 27, 28.
What parts can replace D2500FF ITEM 27, 28?
There are 15 known substitutes for D2500FF ITEM 27, 28: 166-14, F100633, 1488884 and 12 more. Substitute compatibility should be verified for your specific system.
What is the NSN for D2500FF ITEM 27, 28?
D2500FF ITEM 27, 28 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-372-2666. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Comments (0)
No comments yet. Be the first to share what you know.
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — D2500FF ITEM 27, 28

✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026