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PartsTable / COMPONENT / 28420-187B16
28420-187B16 ✓ 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,SPRING is a the manufacturer industrial component. Key specifications include diameter: 0.125 INCHES NOMINAL IN, material: STEEL COMP 1074 OR STEEL OVERALL, overall_length: 0.735 INCHES MINIMUM AND 0.765 INCHES MAXIMUM IN, style_designator: SLOTTED, surface_treatment: CADMIUM OVERALL, material_thickness: 0.028 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-682-2057, 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
28420-187B16
NSN: 5315-00-682-2057
FSC: 5315
CAGE: 56878 — SPS TECHNOLOGIES, LLC DBA PB FASTENERS (USA)
SPECIFICATIONS
diameter0.125 INCHES NOMINAL IN
materialSTEEL COMP 1074 OR STEEL OVERALL
overall_length0.735 INCHES MINIMUM AND 0.765 INCHES MAXIMUM IN
style_designatorSLOTTED
surface_treatmentCADMIUM OVERALL
material_thickness0.028 INCHES NOMINAL IN
material_document_and_classificationAMS 5120 ASSN STD 1ST MATERIAL RESPONSE OR AMS 5121 ASSN STD 2ND MATERIAL RESPONSE OVERALL
NSN5315-00-682-2057
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 28420-187B16 · 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
•
DIAMETER: 0.125 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.028 INCHES NOMINAL IN
•
SURFACE TREATMENT: CADMIUM OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5120 ASSN STD 1ST MATERIAL RESPONSE OR AMS 5121 ASSN STD 2ND MATERIAL RESPONSE OVERALL
•
MATERIAL: STEEL COMP 1074 OR STEEL OVERALL
•
STYLE DESIGNATOR: SLOTTED
TECHNICAL CHARACTERISTICS (FLIS)
DIAMETER0.125 INCHES NOMINAL IN
MATERIAL THICKNESS0.028 INCHES NOMINAL IN
OVERALL LENGTH0.735 INCHES MINIMUM AND 0.765 INCHES MAXIMUM IN
SURFACE TREATMENTCADMIUM OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5120 ASSN STD 1ST MATERIAL RESPONSE OR AMS 5121 ASSN STD 2ND MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP 1074 OR STEEL OVERALL
STYLE DESIGNATORSLOTTED
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
SB9133 PIECE 19Interchangeable
interchangeable cross-reference
interchangeable
5315008103701Interchangeable
interchangeable cross-reference
interchangeable
19-1250750Interchangeable
interchangeable cross-reference
interchangeable
D52-028-125-0750Interchangeable
Same NIIN cross-reference
interchangeable
MS9048-104Interchangeable
Same NIIN cross-reference
interchangeable
LL1/4X3/4Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 28420-187B16?
28420-187B16 is a PIN,SPRING.
What parts can replace 28420-187B16?
There are 6 known substitutes for 28420-187B16: SB9133 PIECE 19, 5315008103701, 19-1250750 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 28420-187B16?
28420-187B16 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-682-2057. 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: July 2026