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3016550 — NUT,SELF-LOCKING,EXTENDED WASHER

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

3016550: NUT,SELF-LOCKING,EXTENDED WASHER.

NUT,SELF-LOCKING,EXTENDED WASHER. Key specifications include material: STEEL OVERALL, shank_length: 1.500 INCHES MINIMUM AND 1.620 INCHES MAXIMUM IN, thread_class: 2A A, thread_length: 0.875 INCHES NOMINAL IN, overall_length: 3.810 INCHES MINIMUM AND 4.190 INCHES MAXIMUM IN, special_features: FURNISHED WITH STEEL SPACER. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-448-5787, 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
3016550
NSN: 5310-00-448-5787
NIINs: 004485787, 010642909
FSC: 5310 — Nuts and Washers
CAGE: 00198 — PRATT & WHITNEY CANADA CORP DIV PRATT & WHITNEY CANADA CORP. (CAN)
SPECIFICATIONS
materialSTEEL OVERALL
shank_length1.500 INCHES MINIMUM AND 1.620 INCHES MAXIMUM IN
thread_class2A A
thread_length0.875 INCHES NOMINAL IN
overall_length3.810 INCHES MINIMUM AND 4.190 INCHES MAXIMUM IN
special_featuresFURNISHED WITH STEEL SPACER
thread_directionRIGHT-HAND
eye_outside_width2.120 INCHES NOMINAL IN
shoulder_diameter0.500 INCHES MINIMUM AND 0.530 INCHES MAXIMUM IN
surface_treatmentCADMIUM OVERALL
eye_stock_diameter0.440 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
shoulder_thickness0.190 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
NSN5310-00-448-5787
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 3016550 · 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: 0.515 INCHES MAXIMUM IN
•
WIDTH ACROSS FLATS: 0.367 INCHES MINIMUM AND 0.376 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: AMS 2400 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
•
THREAD SERIES: UNIFIED NATIONAL JOINT FINE (UNJF)
•
HARDNESS RATING: 39.0 ROCKWELL C MINIMUM AND 46.0 ROCKWELL C MAXIMUM
•
WASHER THICKNESS: 0.058 INCHES MINIMUM AND 0.068 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 6322 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.345 INCHES MINIMUM AND 0.360 INCHES MAXIMUM IN
WASHER OUTSIDE DIAMETER0.515 INCHES MAXIMUM IN
WIDTH ACROSS FLATS0.367 INCHES MINIMUM AND 0.376 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONAMS 2400 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
THREAD SERIESUNIFIED NATIONAL JOINT FINE (UNJF)
HARDNESS RATING39.0 ROCKWELL C MINIMUM AND 46.0 ROCKWELL C MAXIMUM
WASHER THICKNESS0.058 INCHES MINIMUM AND 0.068 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 6322 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.312 INCHES IN
SUBSTITUTES & CROSS-REFERENCES 4
70877-524Reference document
Same NSN cross-reference
Reference document — Replaced / superseded reference
114250-12201Reference document
Same NSN cross-reference
Reference document — Secondary reference
H39546-5Reference document
Same NSN cross-reference
Reference document — Replaced / superseded reference
LH9756-5KReference document
Same NSN cross-reference
Reference document — Design control — primary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 3016550?
3016550 is a NUT,SELF-LOCKING,EXTENDED WASHER.
What parts can replace 3016550?
There are 4 known substitutes for 3016550: 70877-524, 114250-12201, H39546-5 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 3016550?
3016550 is cataloged in the U.S. Government catalog under NSN 5310-00-448-5787. This indicates validated use in U.S. government and defense supply chains.
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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.