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B499556 — PIN,SHOULDER,HEADED

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

B499556: PIN,SHOULDER,HEADED.

The PIN,SHOULDER,HEADED is a the manufacturer industrial component. Key specifications include height: 0.190 INCHES MINIMUM AND 0.200 INCHES MAXIMUM IN, material: STEEL OVERALL, head_style: DEE CHAMFER, first_end_style: SQUARE, style_designator: SHOULDER, first_step_length: 0.190 INCHES MINIMUM AND 0.200 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5315-01-157-8451, 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
B499556
NSN: 5315-01-157-8451
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: K0378 — ROLLS-ROYCE PLC DIV DEFENSE (EUROPE) (GBR)
SPECIFICATIONS
height0.190 INCHES MINIMUM AND 0.200 INCHES MAXIMUM IN
materialSTEEL OVERALL
head_styleDEE CHAMFER
first_end_styleSQUARE
style_designatorSHOULDER
first_step_length0.190 INCHES MINIMUM AND 0.200 INCHES MAXIMUM IN
third_step_length0.654 INCHES NOMINAL IN
under_head_length1.700 INCHES MINIMUM AND 1.710 INCHES MAXIMUM IN
second_step_length0.856 INCHES MINIMUM AND 0.886 INCHES MAXIMUM IN
first_step_diameter0.373 INCHES MINIMUM AND 0.374 INCHES MAXIMUM IN
third_step_diameter0.312 INCHES NOMINAL IN
second_step_diameter0.243 INCHES MINIMUM AND 0.248 INCHES MAXIMUM IN
NSN5315-01-157-8451
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: B499556 · 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: 0.373 INCHES MINIMUM AND 0.374 INCHES MAXIMUM IN
•
THIRD STEP DIAMETER: 0.312 INCHES NOMINAL IN
•
DISTANCE FROM CENTERLINE TO FLAT: 0.273 INCHES MINIMUM AND 0.275 INCHES MAXIMUM IN
•
UNDER HEAD LENGTH: 1.700 INCHES MINIMUM AND 1.710 INCHES MAXIMUM IN
•
FIRST END STYLE: SQUARE
•
SECOND STEP LENGTH: 0.856 INCHES MINIMUM AND 0.886 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: SHOULDER
•
MATERIAL DOCUMENT AND CLASSIFICATION: DTD 5066,FSCM K0378 MFR REF SINGLE MATERIAL RESPONSE OVERALL
TECHNICAL CHARACTERISTICS
FIRST STEP DIAMETER0.373 INCHES MINIMUM AND 0.374 INCHES MAXIMUM IN
THIRD STEP DIAMETER0.312 INCHES NOMINAL IN
DISTANCE FROM CENTERLINE TO FLAT0.273 INCHES MINIMUM AND 0.275 INCHES MAXIMUM IN
UNDER HEAD LENGTH1.700 INCHES MINIMUM AND 1.710 INCHES MAXIMUM IN
FIRST END STYLESQUARE
SECOND STEP LENGTH0.856 INCHES MINIMUM AND 0.886 INCHES MAXIMUM IN
STYLE DESIGNATORSHOULDER
MATERIAL DOCUMENT AND CLASSIFICATIONDTD 5066,FSCM K0378 MFR REF SINGLE MATERIAL RESPONSE OVERALL
HEAD STYLEDEE CHAMFER
SECOND STEP DIAMETER0.243 INCHES MINIMUM AND 0.248 INCHES MAXIMUM IN
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

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 B499556?
B499556 is a PIN,SHOULDER,HEADED.
What is the NSN for B499556?
B499556 is cataloged in the U.S. Government catalog under NSN 5315-01-157-8451. 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.