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PartsTable / COMPONENT / 8409891
8409891 ✓ 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,STRAIGHT,HEADLESS is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1075 OVERALL, first_end_style: CHAMFERED, hardness_rating: 46.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM OVERALL, features_provided: CASEHARDENED, pin_overall_length: 0.750 INCHES NOMINAL IN, first_hole_diameter: 0.059 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-085-1015, 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
8409891
NSN: 5315-00-085-1015
FSC: 5315
CAGE: 19204 — ARMY, UNITED STATES DEPARTMENT OF THE DBA ROCK ISLAND ARSENAL JMTC (USA)
SPECIFICATIONS
materialSTEEL COMP 1075 OVERALL
first_end_styleCHAMFERED
hardness_rating46.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM OVERALL
features_providedCASEHARDENED
pin_overall_length0.750 INCHES NOMINAL IN
first_hole_diameter0.059 INCHES NOMINAL IN
pin_overall_diameter0.0990 INCHES MINIMUM AND 0.1030 INCHES MAXIMUM IN
first_end_taper_angle17.5 DEGREES NOMINAL
first_end_taper_length0.018 INCHES NOMINAL IN
hole_arrangement_styleDRILLED THRU CENTER
material_document_and_classificationSAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
second_end_relationship_with_first_endIDENTICAL
NSN5315-00-085-1015
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 8409891 · 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
•
HOLE ARRANGEMENT STYLE: DRILLED THRU CENTER
•
FEATURES PROVIDED: CASEHARDENED
•
SECOND END RELATIONSHIP WITH FIRST END: IDENTICAL
•
MATERIAL DOCUMENT AND CLASSIFICATION: SAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
FIRST END STYLE: CHAMFERED
•
FIRST END TAPER ANGLE: 17.5 DEGREES NOMINAL
•
FIRST HOLE DIAMETER: 0.059 INCHES NOMINAL IN
•
MATERIAL: STEEL COMP 1075 OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
HOLE ARRANGEMENT STYLEDRILLED THRU CENTER
FEATURES PROVIDEDCASEHARDENED
SECOND END RELATIONSHIP WITH FIRST ENDIDENTICAL
MATERIAL DOCUMENT AND CLASSIFICATIONSAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
FIRST END STYLECHAMFERED
FIRST END TAPER ANGLE17.5 DEGREES NOMINAL
FIRST HOLE DIAMETER0.059 INCHES NOMINAL IN
MATERIALSTEEL COMP 1075 OVERALL
PIN OVERALL LENGTH0.750 INCHES NOMINAL IN
HARDNESS RATING46.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
SE-1-MInterchangeable
interchangeable cross-reference
interchangeable
9E6EWInterchangeable
interchangeable cross-reference
interchangeable
TC-21Interchangeable
interchangeable cross-reference
interchangeable
216-29420-2Interchangeable
interchangeable cross-reference
interchangeable
51685Interchangeable
interchangeable cross-reference
interchangeable
BLC10CL13FInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 8409891?
8409891 is a PIN,STRAIGHT,HEADLESS.
What parts can replace 8409891?
There are 7 known substitutes for 8409891: SE-1-M, 9E6EW, TC-21 and 4 more. Substitute compatibility should be verified for your specific system.
Is 8409891 still available?
8409891 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026