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424-527 — SWITCH,THERMOSTATIC

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

424-527: SWITCH,THERMOSTATIC.

The SWITCH,THERMOSTATIC 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: 2.000 INCHES MINIMUM AND 2.030 INCHES MAXIMUM IN, head_diameter: 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN, fastener_length: 2.281 INCHES MINIMUM AND 2.311 INCHES MAXIMUM IN, hardness_rating: 47.0 ROCKWELL C MINIMUM AND 52.0 ROCKWELL C MAXIMUM OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5315-00-598-2807, 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
424-527
NSN: 5315-00-598-2807
NIINs: 005982807, 008929468
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 77294 — PIPER INDUSTRIAL MANUFACTURING COMPANY, LLC DIV PIPER INDUSTRIAL MANUFACTURING COMPANY (USA)
SPECIFICATIONS
diameter0.180 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN
materialSTEEL COMP 1095 OVERALL
grip_length2.000 INCHES MINIMUM AND 2.030 INCHES MAXIMUM IN
head_diameter0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
fastener_length2.281 INCHES MINIMUM AND 2.311 INCHES MAXIMUM IN
hardness_rating47.0 ROCKWELL C MINIMUM AND 52.0 ROCKWELL C MAXIMUM OVERALL
style_designatorSPRING
surface_treatmentCADMIUM OVERALL
material_document_and_classificationMIL-S-7947 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5315-00-598-2807
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 424-527 · 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: 2.281 INCHES MINIMUM AND 2.311 INCHES MAXIMUM IN
•
HARDNESS RATING: 47.0 ROCKWELL C MINIMUM AND 52.0 ROCKWELL C MAXIMUM 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
•
GRIP LENGTH: 2.000 INCHES MINIMUM AND 2.030 INCHES MAXIMUM IN
•
SURFACE TREATMENT: CADMIUM OVERALL
•
MATERIAL: STEEL COMP 1095 OVERALL
TECHNICAL CHARACTERISTICS
FASTENER LENGTH2.281 INCHES MINIMUM AND 2.311 INCHES MAXIMUM IN
HARDNESS RATING47.0 ROCKWELL C MINIMUM AND 52.0 ROCKWELL C MAXIMUM 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
GRIP LENGTH2.000 INCHES MINIMUM AND 2.030 INCHES MAXIMUM IN
SURFACE TREATMENTCADMIUM OVERALL
MATERIALSTEEL COMP 1095 OVERALL
HEAD DIAMETER0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
SUBSTITUTES & CROSS-REFERENCES 1
NAS427Reference 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 424-527?
424-527 is a SWITCH,THERMOSTATIC.
What parts can replace 424-527?
There is 1 known substitute for 424-527: NAS427. Substitute compatibility should be verified for your specific system.
What is the NSN for 424-527?
424-527 is cataloged in the U.S. Government catalog under NSN 5315-00-598-2807. 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.