PartsTable
Technical Data Sheet
Download PDF

F51559-4-20 — NUT,SELF-LOCKING,PLATE

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

F51559-4-20: NUT,SELF-LOCKING,PLATE.

The NUT,SELF-LOCKING,PLATE is a the manufacturer industrial component. Key specifications include material: STEEL COMP 8740 NUT, nut_length: 1.390 INCHES MAXIMUM IN, plate_thickness: 0.027 INCHES MAXIMUM IN, surface_treatment: CHROMATE NUT, counterbore_diameter: 0.200 INCHES MAXIMUM NUT IN, nut_counterbore_depth: 0.308 INCHES MAXIMUM NUT IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-294-3060, 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
F51559-4-20
NSN: 5310-01-294-3060
FSC: 5310 — Nuts and Washers
CAGE: 15653 — HOWMET GLOBAL FASTENING SYSTEMS INC (USA)
SPECIFICATIONS
materialSTEEL COMP 8740 NUT
nut_length1.390 INCHES MAXIMUM IN
plate_thickness0.027 INCHES MAXIMUM IN
surface_treatmentCHROMATE NUT
counterbore_diameter0.200 INCHES MAXIMUM NUT IN
nut_counterbore_depth0.308 INCHES MAXIMUM NUT IN
mounting_hole_diameter0.103 INCHES MAXIMUM IN
surface_treatment_document_and_classificationQQ-P-416,TY2,CL2 FED SPEC SINGLE TREATMENT RESPONSE NUT
distance_from_aperture_center_to_mounting_hole_center0.567 INCHES MAXIMUM IN
center_to_center_distance_between_mounting_holes_along_length1.127 INCHES MAXIMUM IN
NSN5310-01-294-3060
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: F51559-4-20 · 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: 0.027 INCHES MAXIMUM IN
•
NUT LENGTH: 1.390 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TY2,CL2 FED SPEC SINGLE TREATMENT RESPONSE NUT
•
MOUNTING HOLE DIAMETER: 0.103 INCHES MAXIMUM IN
•
NUT COUNTERBORE DEPTH: 0.308 INCHES MAXIMUM NUT IN
•
COUNTERBORE DIAMETER: 0.200 INCHES MAXIMUM NUT IN
•
DISTANCE FROM APERTURE CENTER TO MOUNTING HOLE CENTER: 0.567 INCHES MAXIMUM IN
•
CENTER TO CENTER DISTANCE BETWEEN MOUNTING HOLES ALONG LENGTH: 1.127 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
PLATE THICKNESS0.027 INCHES MAXIMUM IN
NUT LENGTH1.390 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY2,CL2 FED SPEC SINGLE TREATMENT RESPONSE NUT
MOUNTING HOLE DIAMETER0.103 INCHES MAXIMUM IN
NUT COUNTERBORE DEPTH0.308 INCHES MAXIMUM NUT IN
COUNTERBORE DIAMETER0.200 INCHES MAXIMUM NUT IN
DISTANCE FROM APERTURE CENTER TO MOUNTING HOLE CENTER0.567 INCHES MAXIMUM IN
CENTER TO CENTER DISTANCE BETWEEN MOUNTING HOLES ALONG LENGTH1.127 INCHES MAXIMUM IN
SURFACE TREATMENTCHROMATE NUT
MATERIALSTEEL COMP 8740 NUT
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: Insurance item — stocked against contingency demandNo demilitarization required
Ready to buy F51559-4-20?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is F51559-4-20?
F51559-4-20 is a NUT,SELF-LOCKING,PLATE.
What is the NSN for F51559-4-20?
F51559-4-20 is cataloged in the U.S. Government catalog under NSN 5310-01-294-3060. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — F51559-4-20

✓ 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.