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PK1558 — WASHER,RECESSED

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

PK1558: WASHER,RECESSED.

The WASHER,RECESSED is a the manufacturer industrial component. Key specifications include material: PLASTIC POLYETHYLENE TEREPHTHALATE (PET)(POLYESTER) OVERALL, recess_depth: 0.500 INCHES MINIMUM AND 0.620 INCHES MAXIMUM IN, hole_diameter: 0.302 INCHES MINIMUM AND 0.322 INCHES MAXIMUM IN, overall_height: 0.720 INCHES MINIMUM AND 0.780 INCHES MAXIMUM IN, outside_diameter: 1.470 INCHES MINIMUM AND 1.530 INCHES MAXIMUM IN, special_features: CHAMFER INSIDE EDGE 0.020 IN.MIN 0.060 IN.MAX BY 45 DEG IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-083-2147, 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
PK1558
NSN: 5310-00-083-2147
FSC: 5310 — Nuts and Washers
CAGE: 03950 — NAVAL INVENTORY CONTROL POINT MECHANICSBURG (USA)
SPECIFICATIONS
materialPLASTIC POLYETHYLENE TEREPHTHALATE (PET)(POLYESTER) OVERALL
recess_depth0.500 INCHES MINIMUM AND 0.620 INCHES MAXIMUM IN
hole_diameter0.302 INCHES MINIMUM AND 0.322 INCHES MAXIMUM IN
overall_height0.720 INCHES MINIMUM AND 0.780 INCHES MAXIMUM IN
outside_diameter1.470 INCHES MINIMUM AND 1.530 INCHES MAXIMUM IN
special_featuresCHAMFER INSIDE EDGE 0.020 IN.MIN 0.060 IN.MAX BY 45 DEG IN
style_designatorRECESSED
material_thickness0.188 INCHES NOMINAL IN
part_name_assigned_by_controlling_agencyNAVY SPECIAL PROJECT
NSN5310-00-083-2147
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: PK1558 · 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
•
STYLE DESIGNATOR: RECESSED
•
OUTSIDE DIAMETER: 1.470 INCHES MINIMUM AND 1.530 INCHES MAXIMUM IN
•
RECESS DEPTH: 0.500 INCHES MINIMUM AND 0.620 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.188 INCHES NOMINAL IN
•
MATERIAL: PLASTIC POLYETHYLENE TEREPHTHALATE (PET)(POLYESTER) OVERALL
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.720 INCHES MINIMUM AND 0.780 INCHES MAXIMUM IN
STYLE DESIGNATORRECESSED
OUTSIDE DIAMETER1.470 INCHES MINIMUM AND 1.530 INCHES MAXIMUM IN
RECESS DEPTH0.500 INCHES MINIMUM AND 0.620 INCHES MAXIMUM IN
MATERIAL THICKNESS0.188 INCHES NOMINAL IN
SPECIAL FEATURESCHAMFER INSIDE EDGE 0.020 IN.MIN 0.060 IN.MAX BY 45 DEG IN
PART NAME ASSIGNED BY CONTROLLING AGENCYNAVY SPECIAL PROJECT
MATERIALPLASTIC POLYETHYLENE TEREPHTHALATE (PET)(POLYESTER) OVERALL
HOLE DIAMETER0.302 INCHES MINIMUM AND 0.322 INCHES MAXIMUM IN
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 PK1558?
PK1558 is a WASHER,RECESSED.
What is the NSN for PK1558?
PK1558 is cataloged in the U.S. Government catalog under NSN 5310-00-083-2147. 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.