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8712220 — NUT,PLAIN,EXTENDED WASHER,HEXAGO

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

8712220: NUT,PLAIN,EXTENDED WASHER,HEXAGO.

NUT,PLAIN,EXTENDED WASHER,HEXAGO. Key specifications include material: STEEL COMP 1025 OVERALL, nut_style: HEXAGON, thread_class: 2B, thread_series: UN, overall_height: 1.014 INCHES NOMINAL IN, thread_direction: RIGHT-HAND. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-847-2733, 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
8712220
NSN: 5310-00-847-2733
FSC: 5310 — Nuts and Washers
CAGE: 19207 — U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM (USA)
SPECIFICATIONS
materialSTEEL COMP 1025 OVERALL
nut_styleHEXAGON
thread_class2B
thread_seriesUN
overall_height1.014 INCHES NOMINAL IN
thread_directionRIGHT-HAND
washer_thickness0.109 INCHES NOMINAL IN
surface_treatmentCADMIUM OVERALL
width_across_flats1.460 INCHES MINIMUM AND 1.495 INCHES MAXIMUM IN
nominal_thread_size1.125 INCHES IN
washer_outside_diameter1.969 INCHES MINIMUM AND 2.031 INCHES MAXIMUM IN
thread_quantity_per_inch16
NSN5310-00-847-2733
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 8712220 · 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
•
WASHER OUTSIDE DIAMETER: 1.969 INCHES MINIMUM AND 2.031 INCHES MAXIMUM IN
•
WIDTH ACROSS FLATS: 1.460 INCHES MINIMUM AND 1.495 INCHES MAXIMUM IN
•
THREAD SERIES: UN
•
WASHER THICKNESS: 0.109 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: AISI ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 1.125 INCHES IN
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT1.014 INCHES NOMINAL IN
WASHER OUTSIDE DIAMETER1.969 INCHES MINIMUM AND 2.031 INCHES MAXIMUM IN
WIDTH ACROSS FLATS1.460 INCHES MINIMUM AND 1.495 INCHES MAXIMUM IN
THREAD SERIESUN
WASHER THICKNESS0.109 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONAISI ASSN STD SINGLE MATERIAL RESPONSE OVERALL
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE1.125 INCHES IN
SURFACE TREATMENTCADMIUM OVERALL
NUT STYLEHEXAGON
SUBSTITUTES & CROSS-REFERENCES 2
5310008472733Reference document
Same NSN cross-reference
Reference document — Informative reference only
69912Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 8712220?
8712220 is a NUT,PLAIN,EXTENDED WASHER,HEXAGO.
What parts can replace 8712220?
There are 2 known substitutes for 8712220: 5310008472733, 69912. Substitute compatibility should be verified for your specific system.
What is the NSN for 8712220?
8712220 is cataloged in the U.S. Government catalog under NSN 5310-00-847-2733. 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.