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Technical Data Sheet

5/16UNCTDHIGHCOLLAR — WASHER,LOCK

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

5/16UNCTDHIGHCOLLAR: WASHER,LOCK.

The WASHER,LOCK is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, surface_treatment: CADMIUM OVERALL, criticality_code_justification: ZZZY, part_name_assigned_by_controlling_agency: WASHER,LOCK. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-270-0747, 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
5/16UNCTDHIGHCOLLAR
NSN: 5310-01-270-0747
NIINs: 012700747, 012700749
FSC: 5310 — Nuts and Washers
CAGE: 52374 — FLOWSERVE CORP DBA AUTOMAX ACTUATORS DIV FLOWSERVE US COMPANY (USA)
SPECIFICATIONS
materialSTEEL OVERALL
surface_treatmentCADMIUM OVERALL
criticality_code_justificationZZZY
part_name_assigned_by_controlling_agencyWASHER,LOCK
reference_number_differentiating_characteristicsMATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS
NSN5310-01-270-0747
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 5/16UNCTDHIGHCOLLAR · 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
•
SURFACE TREATMENT: CADMIUM OVERALL
•
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS
SURFACE TREATMENTCADMIUM OVERALL
PART NAME ASSIGNED BY CONTROLLING AGENCYWASHER,LOCK
MATERIALSTEEL OVERALL
SUBSTITUTES & CROSS-REFERENCES 4
5/16UNCTDINTERNALTOOTH(LKG)Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
HT8-5/16UNCOATEDSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
HT1-5/6 PORTSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
HU3-5/16(LKG)Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 5/16UNCTDHIGHCOLLAR?
5/16UNCTDHIGHCOLLAR is a WASHER,LOCK.
What parts can replace 5/16UNCTDHIGHCOLLAR?
There are 4 known substitutes for 5/16UNCTDHIGHCOLLAR: 5/16UNCTDINTERNALTOOTH(LKG), HT8-5/16UNCOATED, HT1-5/6 PORT and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 5/16UNCTDHIGHCOLLAR?
5/16UNCTDHIGHCOLLAR is cataloged in the U.S. Government catalog under NSN 5310-01-270-0747. 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.