PartsTable
Technical Data Sheet
NAS561P8-18 ✓ Verified by PartsTable
· NUT WASHER
WHAT YOU NEED TO KNOW
Match nut grade to bolt grade for full strength Lock nuts prevent loosening under vibration
Don't mix grades — weakens the joint
PRODUCT OVERVIEW

The PIN,SPRING is a the manufacturer industrial component. Key specifications include diameter: 0.250 INCHES NOMINAL IN, material: STEEL COMP 1095 OVERALL, overall_length: 1.105 INCHES MINIMUM AND 1.145 INCHES MAXIMUM IN, hardness_rating: 46.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM OVERALL, style_designator: SLOTTED, features_provided: CASEHARDENED. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-619-3277, 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
NAS561P8-18
NSN: 5315-00-619-3277
FSC: 5315
CAGE: 80205 — NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE (USA)
SPECIFICATIONS
diameter0.250 INCHES NOMINAL IN
materialSTEEL COMP 1095 OVERALL
overall_length1.105 INCHES MINIMUM AND 1.145 INCHES MAXIMUM IN
hardness_rating46.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM OVERALL
style_designatorSLOTTED
features_providedCASEHARDENED
surface_treatmentCADMIUM OVERALL
material_thickness0.048 INCHES NOMINAL IN
material_document_and_classificationMIL-S-7947 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5315-00-619-3277
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: NAS561P8-18 · 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
HARDNESS RATING: 46.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM OVERALL
MATERIAL THICKNESS: 0.048 INCHES NOMINAL IN
MATERIAL: STEEL COMP 1095 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-7947 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
DIAMETER: 0.250 INCHES NOMINAL IN
SURFACE TREATMENT: CADMIUM OVERALL
STYLE DESIGNATOR: SLOTTED
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL LENGTH1.105 INCHES MINIMUM AND 1.145 INCHES MAXIMUM IN
HARDNESS RATING46.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM OVERALL
MATERIAL THICKNESS0.048 INCHES NOMINAL IN
MATERIALSTEEL COMP 1095 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-7947 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
DIAMETER0.250 INCHES NOMINAL IN
SURFACE TREATMENTCADMIUM OVERALL
STYLE DESIGNATORSLOTTED
FEATURES PROVIDEDCASEHARDENED
VERIFIED SUBSTITUTES & CROSS-REFERENCES 20
NAS56156-12Interchangeable
interchangeable cross-reference
interchangeable
0495-110Interchangeable
interchangeable cross-reference
interchangeable
915989Interchangeable
interchangeable cross-reference
interchangeable
MIL-P-10971 TY1CPAInterchangeable
interchangeable cross-reference
interchangeable
MIL-P-10971Interchangeable
interchangeable cross-reference
interchangeable
NASM10971Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is NAS561P8-18?
NAS561P8-18 is a PIN,SPRING.
What parts can replace NAS561P8-18?
There are 20 known substitutes for NAS561P8-18: NAS56156-12, 0495-110, 915989 and 17 more. Substitute compatibility should be verified for your specific system.
Is NAS561P8-18 still available?
NAS561P8-18 is currently cancelled.
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