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Technical Data Sheet
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561L-1 — Technical Data Sheet

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— · 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. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System under NSN 5315-01-172-6375, 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
561L-1
NSN: 5315-01-172-6375
FSC: 5315
CAGE: 94607 — AMOT CONTROLS LLC (USA)
SPECIFICATIONS
Part Number561L-1
NSN5315-01-172-6375
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 561L-1 · 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
7235InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
202820InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
NB1InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
5612-1InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
500602-1InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
57100InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVEGOVERNMENT REGISTRY
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 561L-1?
561L-1 is a PIN,STRAIGHT,HEADLESS.
What parts can replace 561L-1?
There are 8 known substitutes for 561L-1: 7235, 202820, NB1 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 561L-1?
561L-1 is cataloged in the Federal Logistics Information System under NSN 5315-01-172-6375. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: October 2026