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738549-1 — WASHER,SHOULDERED

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

738549-1: WASHER,SHOULDERED.

The WASHER,SHOULDERED is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY 6061 OVERALL, hole_diameter: 0.940 INCHES NOMINAL IN, hardness_rating: 45.0 ROCKWELL C MINIMUM, shoulder_height: 0.075 INCHES MINIMUM AND 0.085 INCHES MAXIMUM IN, outside_diameter: 1.212 INCHES MINIMUM AND 1.216 INCHES MAXIMUM IN, style_designator: SHOULDERED. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-474-1370, 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
738549-1
NSN: 5310-00-474-1370
FSC: 5310 — Nuts and Washers
CAGE: 73030 — HAMILTON SUNDSTRAND CORPORATION DBA COLLINS AEROSPACE (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 6061 OVERALL
hole_diameter0.940 INCHES NOMINAL IN
hardness_rating45.0 ROCKWELL C MINIMUM
shoulder_height0.075 INCHES MINIMUM AND 0.085 INCHES MAXIMUM IN
outside_diameter1.212 INCHES MINIMUM AND 1.216 INCHES MAXIMUM IN
style_designatorSHOULDERED
shoulder_diameter1.121 INCHES MINIMUM AND 1.125 INCHES MAXIMUM IN
surface_treatmentANODIZE OVERALL
material_thickness0.050 INCHES MINIMUM AND 0.060 INCHES MAXIMUM IN
material_document_and_classificationAMS 4117 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
part_name_assigned_by_controlling_agencyNAVY SPECIAL PROJECT
surface_treatment_document_and_classificationHS334,TY 2,FSCM 73030 MFR REF SINGLE TREATMENT RESPONSE OVERALL
NSN5310-00-474-1370
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 738549-1 · 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
KEY FEATURES
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: HS334,TY 2,FSCM 73030 MFR REF SINGLE TREATMENT RESPONSE OVERALL
•
SHOULDER HEIGHT: 0.075 INCHES MINIMUM AND 0.085 INCHES MAXIMUM IN
•
HARDNESS RATING: 45.0 ROCKWELL C MINIMUM
•
STYLE DESIGNATOR: SHOULDERED
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 4117 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 1.212 INCHES MINIMUM AND 1.216 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.050 INCHES MINIMUM AND 0.060 INCHES MAXIMUM IN
•
SHOULDER DIAMETER: 1.121 INCHES MINIMUM AND 1.125 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONHS334,TY 2,FSCM 73030 MFR REF SINGLE TREATMENT RESPONSE OVERALL
SHOULDER HEIGHT0.075 INCHES MINIMUM AND 0.085 INCHES MAXIMUM IN
HARDNESS RATING45.0 ROCKWELL C MINIMUM
STYLE DESIGNATORSHOULDERED
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 4117 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER1.212 INCHES MINIMUM AND 1.216 INCHES MAXIMUM IN
MATERIAL THICKNESS0.050 INCHES MINIMUM AND 0.060 INCHES MAXIMUM IN
SHOULDER DIAMETER1.121 INCHES MINIMUM AND 1.125 INCHES MAXIMUM IN
SURFACE TREATMENTANODIZE OVERALL
PART NAME ASSIGNED BY CONTROLLING AGENCYNAVY SPECIAL PROJECT
OTHER ITEMS IN FSC 5310 — Nuts and Washers
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5310-00-000-0040 5310-00-000-0077 5310-00-000-0079 5310-00-000-1146 5310-00-000-3815 5310-00-000-4532 5310-00-000-4540
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 738549-1?
738549-1 is a WASHER,SHOULDERED.
What is the NSN for 738549-1?
738549-1 is cataloged in the U.S. Government catalog under NSN 5310-00-474-1370. 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.