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ST4M172N5 — NUT SPACER,PLATE

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

ST4M172N5: NUT SPACER,PLATE.

The NUT SPACER,PLATE is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY 2024 OVERALL, nut_style: PLATE NUT SPACER, nut_length: 1.072 INCHES MAXIMUM IN, plate_thickness: 0.060 INCHES MINIMUM AND 0.066 INCHES MAXIMUM IN, special_features: APERTURE DIA CHAMFERED 0.660 IN. MIN,0.670 IN.

MAX BY 90 DEG IN, surface_treatment: PAINT OR ANODIZE OVERALL. This part is cataloged in the U.S. Government catalog under NSN 5310-01-005-6725, 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
ST4M172N5
NSN: 5310-01-005-6725
FSC: 5310 — Nuts and Washers
CAGE: 76301 — THE BOEING COMPANY DIV DEFENSE (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 2024 OVERALL
nut_stylePLATE NUT SPACER
nut_length1.072 INCHES MAXIMUM IN
plate_thickness0.060 INCHES MINIMUM AND 0.066 INCHES MAXIMUM IN
special_featuresAPERTURE DIA CHAMFERED 0.660 IN. MIN,0.670 IN. MAX BY 90 DEG IN
surface_treatmentPAINT OR ANODIZE OVERALL
thru-hole_diameter0.570 INCHES MINIMUM AND 0.580 INCHES MAXIMUM IN
mounting_hole_diameter0.098 INCHES MINIMUM AND 0.103 INCHES MAXIMUM IN
nut_mounting_provisionCOUNTERSUNK HOLES
mounting_provision_locationNUT PROJECTION SIDE
mounting_hole_arrangement_style2 HOLES
mounting_hole_countersink_angle98.0 DEGREES MINIMUM AND 102.0 DEGREES MAXIMUM
NSN5310-01-005-6725
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: ST4M172N5 · 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
•
PLATE THICKNESS: 0.060 INCHES MINIMUM AND 0.066 INCHES MAXIMUM IN
•
NUT LENGTH: 1.072 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MMS-425,FSCM 76301 MFR REF 1ST TREATMENT RESPONSE OR MIL-A-8625 MIL SPEC 2ND TREATMENT RESPONSE OVERALL
•
MOUNTING HOLE ARRANGEMENT STYLE: 2 HOLES
•
MOUNTING HOLE COUNTERSINK ANGLE: 98.0 DEGREES MINIMUM AND 102.0 DEGREES MAXIMUM
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-A-250/4,ALLOY 2024,TEMPER T81 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
MOUNTING HOLE DIAMETER: 0.098 INCHES MINIMUM AND 0.103 INCHES MAXIMUM IN
•
MOUNTING PROVISION LOCATION: NUT PROJECTION SIDE
TECHNICAL CHARACTERISTICS
PLATE THICKNESS0.060 INCHES MINIMUM AND 0.066 INCHES MAXIMUM IN
NUT LENGTH1.072 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMMS-425,FSCM 76301 MFR REF 1ST TREATMENT RESPONSE OR MIL-A-8625 MIL SPEC 2ND TREATMENT RESPONSE OVERALL
MOUNTING HOLE ARRANGEMENT STYLE2 HOLES
MOUNTING HOLE COUNTERSINK ANGLE98.0 DEGREES MINIMUM AND 102.0 DEGREES MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-250/4,ALLOY 2024,TEMPER T81 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
MOUNTING HOLE DIAMETER0.098 INCHES MINIMUM AND 0.103 INCHES MAXIMUM IN
MOUNTING PROVISION LOCATIONNUT PROJECTION SIDE
DISTANCE FROM APERTURE CENTER TO MOUNTING HOLE CENTER0.495 INCHES MINIMUM AND 0.505 INCHES MAXIMUM IN
THRU-HOLE DIAMETER0.570 INCHES MINIMUM AND 0.580 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: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is ST4M172N5?
ST4M172N5 is a NUT SPACER,PLATE.
What is the NSN for ST4M172N5?
ST4M172N5 is cataloged in the U.S. Government catalog under NSN 5310-01-005-6725. 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.