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CA40040 — PIN,ECCENTRIC

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

CA40040: PIN,ECCENTRIC.

The PIN,ECCENTRIC is a the manufacturer industrial component. Key specifications include material: STEEL COMP 4140 OR STEEL COMP 4130 OVERALL, overall_length: 1.810 INCHES NOMINAL IN, surface_treatment: CADMIUM AND CHROMATE OVERALL, first_step_diameter: 0.370 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN, third_step_diameter: 0.250 INCHES NOMINAL IN, width_between_flats: 0.125 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5315-01-294-8603, 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
CA40040
NSN: 5315-01-294-8603
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 29372 — HOWMET GLOBAL FASTENING SYSTEMS INC. DIV TRIDAIR PRODUCTS (USA)
SPECIFICATIONS
materialSTEEL COMP 4140 OR STEEL COMP 4130 OVERALL
overall_length1.810 INCHES NOMINAL IN
surface_treatmentCADMIUM AND CHROMATE OVERALL
first_step_diameter0.370 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN
third_step_diameter0.250 INCHES NOMINAL IN
width_between_flats0.125 INCHES NOMINAL IN
internal_drive_styleSOCKET
second_step_diameter0.680 INCHES NOMINAL IN
material_document_and_classificationMIL-S-5626 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-6758 MIL SPEC 2ND MATERIAL RESPONSE OVERALL
surface_treatment_document_and_classificationQQ-P-416,TY 2 CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN5315-01-294-8603
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: CA40040 · 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
•
FIRST STEP DIAMETER: 0.370 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TY 2 CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
THIRD STEP DIAMETER: 0.250 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-5626 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-6758 MIL SPEC 2ND MATERIAL RESPONSE OVERALL
•
SECOND STEP DIAMETER: 0.680 INCHES NOMINAL IN
•
WIDTH BETWEEN FLATS: 0.125 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
FIRST STEP DIAMETER0.370 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 2 CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
THIRD STEP DIAMETER0.250 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-5626 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-6758 MIL SPEC 2ND MATERIAL RESPONSE OVERALL
OVERALL LENGTH1.810 INCHES NOMINAL IN
SECOND STEP DIAMETER0.680 INCHES NOMINAL IN
WIDTH BETWEEN FLATS0.125 INCHES NOMINAL IN
SPECIAL FEATURESFURNISHED WITH ONE LOCKING NUT,MATERIAL STEEL C1118,0.250-28 UNIFIED NATIONAL FINE THREAD CLASS 3B FIT,NYLON LOCKING INSERT; ONE ADJUSTABLE NUT0.130 INCH NOMINAL FLANGE HEIGHT,0.250 INCH NOMINAL INSIDE DIAMETER; ONE BUSHING 0.497 INCH MINIMUM 0.500 INCH MAXIMUM BODY OUTSIDE DIAMETER; THIRD STEP 0.250 UNIFIED NATIONAL FINE 3A CLASS FULL THREAD A
SURFACE TREATMENTCADMIUM AND CHROMATE OVERALL
INTERNAL DRIVE STYLESOCKET
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 2
5189474Reference document
Same NSN cross-reference
Reference document — Vendor item drawing reference
FT 1583-6Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 CA40040?
CA40040 is a PIN,ECCENTRIC.
What parts can replace CA40040?
There are 2 known substitutes for CA40040: 5189474, FT 1583-6. Substitute compatibility should be verified for your specific system.
What is the NSN for CA40040?
CA40040 is cataloged in the U.S. Government catalog under NSN 5315-01-294-8603. 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.