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AD3M891-5 — NUT,PLAIN,SLOTTED,HEXAGON

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

AD3M891-5: NUT,PLAIN,SLOTTED,HEXAGON.

The NUT,PLAIN,SLOTTED,HEXAGON is a the manufacturer industrial component. Key specifications include material: IRON ALLOY 660 OVERALL, nut_style: SLOTTED, HEXAGONSLOTTED, HEXAGON, nut_height: 0.240 INCHES MINIMUM AND 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM0.260 INCHES MAXIMUM IN, thread_class: 3B3B, thread_series: UNIFIED NATIONAL JOINT FINE (UNJF)UNIFIED NATIONAL JOINT FINE (UNJF), special_features: DRY FILM LUBRICANTDRY FILM LUBRICANT. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-135-4153, 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
AD3M891-5
NSN: 5310-01-135-4153
FSC: 5310 — Nuts and Washers
CAGE: 92595 — NELSON STUD WELDING, INC (USA)
SPECIFICATIONS
materialIRON ALLOY 660 OVERALL
nut_styleSLOTTED, HEXAGONSLOTTED, HEXAGON
nut_height0.240 INCHES MINIMUM AND 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM0.260 INCHES MAXIMUM IN
thread_class3B3B
thread_seriesUNIFIED NATIONAL JOINT FINE (UNJF)UNIFIED NATIONAL JOINT FINE (UNJF)
special_featuresDRY FILM LUBRICANTDRY FILM LUBRICANT
thread_directionRIGHT-HANDRIGHT-HAND
countersink_angle110.0 DEGREES NOMINAL NUT110.0 DEGREES NOMINAL NUT
surface_treatmentPASSIVATE OVERALLPASSIVATE OVERALL
width_across_flats0.490 INCHES MINIMUM AND 0.490 INCHES MINIMUM AND 0.502 INCHES MAXIMUM0.502 INCHES MAXIMUM IN
nominal_thread_size0.312 INCHES0.312 INCHES IN
bearing_surface_typeWASHER FACEDWASHER FACED
NSN5310-01-135-4153
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: AD3M891-5 · 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: 0.490 INCHES MINIMUM AND 0.490 INCHES MINIMUM AND 0.502 INCHES MAXIMUM0.502 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35 FED SPEC 1ST TREATMENT RESPONSE AND QQ-P-35 FED SPEC 1ST TREATMENT RESPONSE AND 2396,FSCM 76301 MFR REF 2ND TREATMENT RESPONSE OVERALL2396,FSCM 76301 MFR REF 2ND TREATMENT RESPONSE OVERALL
•
THREAD SERIES: UNIFIED NATIONAL JOINT FINE (UNJF)UNIFIED NATIONAL JOINT FINE (UNJF)
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5731 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5731 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5732 ASSN STD SINGLE MATERIAL RESPONSE OVERALLAMS 5732 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
THREAD DIRECTION: RIGHT-HANDRIGHT-HAND
•
NOMINAL THREAD SIZE: 0.312 INCHES0.312 INCHES IN
•
NUT HEIGHT: 0.240 INCHES MINIMUM AND 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM0.260 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.490 INCHES MINIMUM AND 0.490 INCHES MINIMUM AND 0.502 INCHES MAXIMUM0.502 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC 1ST TREATMENT RESPONSE AND QQ-P-35 FED SPEC 1ST TREATMENT RESPONSE AND 2396,FSCM 76301 MFR REF 2ND TREATMENT RESPONSE OVERALL2396,FSCM 76301 MFR REF 2ND TREATMENT RESPONSE OVERALL
THREAD SERIESUNIFIED NATIONAL JOINT FINE (UNJF)UNIFIED NATIONAL JOINT FINE (UNJF)
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5731 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5731 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5732 ASSN STD SINGLE MATERIAL RESPONSE OVERALLAMS 5732 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
THREAD DIRECTIONRIGHT-HANDRIGHT-HAND
NOMINAL THREAD SIZE0.312 INCHES0.312 INCHES IN
NUT HEIGHT0.240 INCHES MINIMUM AND 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM0.260 INCHES MAXIMUM IN
SPECIAL FEATURESDRY FILM LUBRICANTDRY FILM LUBRICANT
SURFACE TREATMENTPASSIVATE OVERALLPASSIVATE OVERALL
COUNTERSINK ANGLE110.0 DEGREES NOMINAL NUT110.0 DEGREES NOMINAL NUT
SUBSTITUTES & CROSS-REFERENCES 3
3M891-5Reference document
Same NSN cross-reference
Reference document — Vendor item drawing reference
79537-524Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
10109724Reference document
Same NSN cross-reference
Reference document — Informative reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is AD3M891-5?
AD3M891-5 is a NUT,PLAIN,SLOTTED,HEXAGON.
What parts can replace AD3M891-5?
There are 3 known substitutes for AD3M891-5: 3M891-5, 79537-524, 10109724. Substitute compatibility should be verified for your specific system.
What is the NSN for AD3M891-5?
AD3M891-5 is cataloged in the U.S. Government catalog under NSN 5310-01-135-4153. 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.