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193578PC4 — WASHER,SPRING TENSION

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

193578PC4: WASHER,SPRING TENSION.

The WASHER,SPRING TENSION is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, hole_diameter: 2.130 INCHES MINIMUM AND 2.135 INCHES MAXIMUM IN, heat_treatment: QUENCHED AND TEMPERED, overall_height: 0.160 INCHES NOMINAL IN, hardness_rating: 48.0 ROCKWELL C MINIMUM, outside_diameter: 3.220 INCHES MINIMUM AND 3.240 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-144-9703, 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
193578PC4
NSN: 5310-00-144-9703
FSC: 5310 — Nuts and Washers
CAGE: 10001 — NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
materialSTEEL OVERALL
hole_diameter2.130 INCHES MINIMUM AND 2.135 INCHES MAXIMUM IN
heat_treatmentQUENCHED AND TEMPERED
overall_height0.160 INCHES NOMINAL IN
hardness_rating48.0 ROCKWELL C MINIMUM
outside_diameter3.220 INCHES MINIMUM AND 3.240 INCHES MAXIMUM IN
style_designatorSPRING TENSION
material_thickness0.040 INCHES NOMINAL IN
NSN5310-00-144-9703
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 193578PC4 · 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
•
HEAT TREATMENT: QUENCHED AND TEMPERED
•
HARDNESS RATING: 48.0 ROCKWELL C MINIMUM
•
STYLE DESIGNATOR: SPRING TENSION
•
OUTSIDE DIAMETER: 3.220 INCHES MINIMUM AND 3.240 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.040 INCHES NOMINAL IN
•
MATERIAL: STEEL OVERALL
•
HOLE DIAMETER: 2.130 INCHES MINIMUM AND 2.135 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.160 INCHES NOMINAL IN
HEAT TREATMENTQUENCHED AND TEMPERED
HARDNESS RATING48.0 ROCKWELL C MINIMUM
STYLE DESIGNATORSPRING TENSION
OUTSIDE DIAMETER3.220 INCHES MINIMUM AND 3.240 INCHES MAXIMUM IN
MATERIAL THICKNESS0.040 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
HOLE DIAMETER2.130 INCHES MINIMUM AND 2.135 INCHES MAXIMUM IN
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
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FREQUENTLY ASKED QUESTIONS
What is 193578PC4?
193578PC4 is a WASHER,SPRING TENSION.
What is the NSN for 193578PC4?
193578PC4 is cataloged in the U.S. Government catalog under NSN 5310-00-144-9703. 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.