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NAS427K56 — PIN,SPRING

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

NAS427K56: PIN,SPRING.

The PIN,SPRING is a the manufacturer industrial component. Key specifications include diameter: 0.180 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN, material: STEEL COMP 1095 OVERALL, grip_length: 3.500 INCHES MINIMUM AND 3.530 INCHES MAXIMUM IN, head_diameter: 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN, fastener_length: 3.781 INCHES MINIMUM AND 3.811 INCHES MAXIMUM IN, style_designator: SPRING. This part is cataloged in the U.S.

Government catalog under NSN 5315-00-514-0449, 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
NAS427K56
NSN: 5315-00-514-0449
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 80205 — NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE (USA)
SPECIFICATIONS
diameter0.180 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN
materialSTEEL COMP 1095 OVERALL
grip_length3.500 INCHES MINIMUM AND 3.530 INCHES MAXIMUM IN
head_diameter0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
fastener_length3.781 INCHES MINIMUM AND 3.811 INCHES MAXIMUM IN
style_designatorSPRING
surface_treatmentCADMIUM OVERALL
specification/standard_data80205-NAS427 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
material_document_and_classificationMIL-S-7947 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
surface_treatment_document_and_classificationQQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN5315-00-514-0449
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: NAS427K56 · 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
•
FASTENER LENGTH: 3.781 INCHES MINIMUM AND 3.811 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
STYLE DESIGNATOR: SPRING
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-7947 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
•
DIAMETER: 0.180 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN
•
SPECIFICATION/STANDARD DATA: 80205-NAS427 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
•
GRIP LENGTH: 3.500 INCHES MINIMUM AND 3.530 INCHES MAXIMUM IN
•
SURFACE TREATMENT: CADMIUM OVERALL
TECHNICAL CHARACTERISTICS
FASTENER LENGTH3.781 INCHES MINIMUM AND 3.811 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
STYLE DESIGNATORSPRING
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-7947 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
DIAMETER0.180 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN
SPECIFICATION/STANDARD DATA80205-NAS427 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
GRIP LENGTH3.500 INCHES MINIMUM AND 3.530 INCHES MAXIMUM IN
SURFACE TREATMENTCADMIUM OVERALL
MATERIALSTEEL COMP 1095 OVERALL
HEAD DIAMETER0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
OTHER ITEMS IN FSC 5315 — Nails, Machine Keys, and Pins
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5315-00-000-1037 5315-00-000-1067 5315-00-000-1245 5315-00-000-1372 5315-00-000-1412 5315-00-001-1571 5315-00-001-1572 5315-00-001-1602
SUBSTITUTES & CROSS-REFERENCES 1
NAS427Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
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 NAS427K56?
NAS427K56 is a PIN,SPRING.
What parts can replace NAS427K56?
There is 1 known substitute for NAS427K56: NAS427. Substitute compatibility should be verified for your specific system.
What is the NSN for NAS427K56?
NAS427K56 is cataloged in the U.S. Government catalog under NSN 5315-00-514-0449. 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.