PartsTable
Technical Data Sheet
Download PDF

ST4M150E4001 — WASHER,RECESSED

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

ST4M150E4001: WASHER,RECESSED.

The WASHER,RECESSED is a the manufacturer industrial component. Key specifications include material: STEEL COMP 630 OVERALL, recess_angle: 89.0 DEGREES MINIMUM AND 91.0 DEGREES MAXIMUM, hole_diameter: 0.252 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN, recess_diameter: 0.334 INCHES MINIMUM AND 0.344 INCHES MAXIMUM IN, outside_diameter: 0.420 INCHES MINIMUM AND 0.440 INCHES MAXIMUM IN, style_designator: RECESSED. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-073-9224, 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
ST4M150E4001
NSN: 5310-01-073-9224
FSC: 5310 — Nuts and Washers
CAGE: 76301 — THE BOEING COMPANY DIV DEFENSE (USA)
SPECIFICATIONS
materialSTEEL COMP 630 OVERALL
recess_angle89.0 DEGREES MINIMUM AND 91.0 DEGREES MAXIMUM
hole_diameter0.252 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
recess_diameter0.334 INCHES MINIMUM AND 0.344 INCHES MAXIMUM IN
outside_diameter0.420 INCHES MINIMUM AND 0.440 INCHES MAXIMUM IN
style_designatorRECESSED
surface_treatmentPASSIVATE OVERALL
material_thickness0.074 INCHES MINIMUM AND 0.082 INCHES MAXIMUM IN
specification/standard_data76301-ST4-150 MANUFACTURERS STANDARD
material_document_and_classificationAMS 5604,COND H1025 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN5310-01-073-9224
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: ST4M150E4001 · 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
•
STYLE DESIGNATOR: RECESSED
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5604,COND H1025 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 0.420 INCHES MINIMUM AND 0.440 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.074 INCHES MINIMUM AND 0.082 INCHES MAXIMUM IN
•
SPECIFICATION/STANDARD DATA: 76301-ST4-150 MANUFACTURERS STANDARD
•
RECESS DIAMETER: 0.334 INCHES MINIMUM AND 0.344 INCHES MAXIMUM IN
•
SURFACE TREATMENT: PASSIVATE OVERALL
•
MATERIAL: STEEL COMP 630 OVERALL
TECHNICAL CHARACTERISTICS
STYLE DESIGNATORRECESSED
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5604,COND H1025 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER0.420 INCHES MINIMUM AND 0.440 INCHES MAXIMUM IN
MATERIAL THICKNESS0.074 INCHES MINIMUM AND 0.082 INCHES MAXIMUM IN
SPECIFICATION/STANDARD DATA76301-ST4-150 MANUFACTURERS STANDARD
RECESS DIAMETER0.334 INCHES MINIMUM AND 0.344 INCHES MAXIMUM IN
SURFACE TREATMENTPASSIVATE OVERALL
MATERIALSTEEL COMP 630 OVERALL
HOLE DIAMETER0.252 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
RECESS ANGLE89.0 DEGREES MINIMUM AND 91.0 DEGREES MAXIMUM
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: Normally procured from the manufacturer (OEM)No demilitarization required
Ready to buy ST4M150E4001?
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 ST4M150E4001?
ST4M150E4001 is a WASHER,RECESSED.
What is the NSN for ST4M150E4001?
ST4M150E4001 is cataloged in the U.S. Government catalog under NSN 5310-01-073-9224. 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 — ST4M150E4001

✓ 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.