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MK1031-3P — NUT,SELF-LOCKING,PLATE

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

MK1031-3P: NUT,SELF-LOCKING,PLATE.

The NUT,SELF-LOCKING,PLATE is a the manufacturer industrial component. Key specifications include material: IRON ALLOY 660 OVERALL, nut_style: PLATE, nut_height: 0.220 INCHES MAXIMUM IN, nut_length: 0.724 INCHES MAXIMUM IN, plate_width: 0.328 INCHES MAXIMUM IN, temp_rating: 900.0 FAHRENHEIT MAXIMUM DEGF. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-076-7216, 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
MK1031-3P
NSN: 5310-01-076-7216
FSC: 5310 — Nuts and Washers
CAGE: 15653 — HOWMET GLOBAL FASTENING SYSTEMS INC (USA)
SPECIFICATIONS
materialIRON ALLOY 660 OVERALL
nut_stylePLATE
nut_height0.220 INCHES MAXIMUM IN
nut_length0.724 INCHES MAXIMUM IN
plate_width0.328 INCHES MAXIMUM IN
temp_rating900.0 FAHRENHEIT MAXIMUM DEGF
thread_class3B
thread_seriesUNF
locking_featurePREVAILING TORQUE ALL METAL DESIGN
plate_thickness0.032 INCHES NOMINAL IN
thread_directionRIGHT-HAND
precious_materialSILVER
NSN5310-01-076-7216
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: MK1031-3P · 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
•
PLATE THICKNESS: 0.032 INCHES NOMINAL IN
•
NUT LENGTH: 0.724 INCHES MAXIMUM IN
•
THREAD SERIES: UNF
•
PRECIOUS MATERIAL: SILVER
•
PLATE WIDTH: 0.328 INCHES MAXIMUM IN
•
TEMP RATING: 900.0 FAHRENHEIT MAXIMUM DEGF
•
MOUNTING PROVISION LOCATION: OPPOSITE NUT PROJECTION SIDE
•
NUT COUNTERBORE DEPTH: 0.062 INCHES MINIMUM NUT IN
TECHNICAL CHARACTERISTICS
PLATE THICKNESS0.032 INCHES NOMINAL IN
NUT LENGTH0.724 INCHES MAXIMUM IN
THREAD SERIESUNF
PRECIOUS MATERIALSILVER
PLATE WIDTH0.328 INCHES MAXIMUM IN
TEMP RATING900.0 FAHRENHEIT MAXIMUM DEGF
MOUNTING PROVISION LOCATIONOPPOSITE NUT PROJECTION SIDE
NUT COUNTERBORE DEPTH0.062 INCHES MINIMUM NUT IN
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.190 INCHES 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: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is MK1031-3P?
MK1031-3P is a NUT,SELF-LOCKING,PLATE.
What is the NSN for MK1031-3P?
MK1031-3P is cataloged in the U.S. Government catalog under NSN 5310-01-076-7216. 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.