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78889M-1216 — NUT,PLAIN,ASSEMBLED WASHER

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

78889M-1216: NUT,PLAIN,ASSEMBLED WASHER.

The NUT,PLAIN,ASSEMBLED WASHER is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY 718 WASHER, nut_style: FLAT WITH TURNED UP EDGE, overall_height: 1.195 INCHES MINIMUM AND 1.230 INCHES MAXIMUM IN, special_features: DBL HEX. DRIVE,SLOTTED TOP, counterbore_diameter: 0.752 INCHES MINIMUM AND 0.756 INCHES MAXIMUM WASHER IN, nut_counterbore_depth: 0.195 INCHES MINIMUM AND 0.215 INCHES MAXIMUM WASHER IN.

This part is cataloged in the U.S. Government catalog under NSN 5310-01-347-6146, 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
78889M-1216
NSN: 5310-01-347-6146
FSC: 5310 — Nuts and Washers
CAGE: 56878 — SPS TECHNOLOGIES, LLC DBA PB FASTENERS (USA)
SPECIFICATIONS
materialNICKEL ALLOY 718 WASHER
nut_styleFLAT WITH TURNED UP EDGE
overall_height1.195 INCHES MINIMUM AND 1.230 INCHES MAXIMUM IN
special_featuresDBL HEX. DRIVE,SLOTTED TOP
counterbore_diameter0.752 INCHES MINIMUM AND 0.756 INCHES MAXIMUM WASHER IN
nut_counterbore_depth0.195 INCHES MINIMUM AND 0.215 INCHES MAXIMUM WASHER IN
end_item_identification1560-01-106-9519
washer_outside_diameter1.320 INCHES MINIMUM AND 1.500 INCHES MAXIMUM IN
NSN5310-01-347-6146
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 78889M-1216 · 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: 1.320 INCHES MINIMUM AND 1.500 INCHES MAXIMUM IN
•
NUT COUNTERBORE DEPTH: 0.195 INCHES MINIMUM AND 0.215 INCHES MAXIMUM WASHER IN
•
COUNTERBORE DIAMETER: 0.752 INCHES MINIMUM AND 0.756 INCHES MAXIMUM WASHER IN
•
NUT STYLE: FLAT WITH TURNED UP EDGE
•
MATERIAL: NICKEL ALLOY 718 WASHER
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT1.195 INCHES MINIMUM AND 1.230 INCHES MAXIMUM IN
WASHER OUTSIDE DIAMETER1.320 INCHES MINIMUM AND 1.500 INCHES MAXIMUM IN
NUT COUNTERBORE DEPTH0.195 INCHES MINIMUM AND 0.215 INCHES MAXIMUM WASHER IN
COUNTERBORE DIAMETER0.752 INCHES MINIMUM AND 0.756 INCHES MAXIMUM WASHER IN
SPECIAL FEATURESDBL HEX. DRIVE,SLOTTED TOP
NUT STYLEFLAT WITH TURNED UP EDGE
END ITEM IDENTIFICATION1560-01-106-9519
MATERIALNICKEL ALLOY 718 WASHER
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 1
7-211160053-1Reference 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 78889M-1216?
78889M-1216 is a NUT,PLAIN,ASSEMBLED WASHER.
What parts can replace 78889M-1216?
There is 1 known substitute for 78889M-1216: 7-211160053-1. Substitute compatibility should be verified for your specific system.
What is the NSN for 78889M-1216?
78889M-1216 is cataloged in the U.S. Government catalog under NSN 5310-01-347-6146. 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.