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RR275 — GEAR RACK

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

RR275: GEAR RACK.

The GEAR RACK is a the manufacturer industrial component. Key specifications include material: IRON CAST OVERALL, ring_style: SPECIAL FLAT, teeth_type: SPUR, usage_design: INTERNAL, inside_diameter: 2.549 INCHES NOMINAL IN, major_thickness: 0.046 INCHES MINIMUM AND 0.052 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5325-00-664-2759, 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
RR275
NSN: 5325-00-664-2759
NIINs: 006642759, 013252993
FSC: 5325 — Fastening Devices
CAGE: 80756 — SPIROLOX INC (USA)
SPECIFICATIONS
materialIRON CAST OVERALL
ring_styleSPECIAL FLAT
teeth_typeSPUR
usage_designINTERNAL
inside_diameter2.549 INCHES NOMINAL IN
major_thickness0.046 INCHES MINIMUM AND 0.052 INCHES MAXIMUM IN
strength_ratingERR-060
outside_diameter2.865 INCHES MINIMUM AND 2.890 INCHES MAXIMUM IN
casehardening_indicatorNOT CASEHARDENED
end_item_identificationDUTCHESS DOUGH DIVIDER-ROUNDER,MODEL RR36 TYPE 2
material_hardness_rating40.0 ROCKWELL C MINIMUM AND 51.5 ROCKWELL C MAXIMUM
cross-sectional_shape_styleDOUBLE OVAL
NSN5325-00-664-2759
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: RR275 · OEM ⚠ VERIFY BEFORE ORDERING Verify thread pitch before ordering — metric (M8×1.25) ≠ imperial (5/16-18). Wrong thread = wrong part. Grade/class stamped on bolt head determines tensile strength ✓ BROKER TIP Grade/class stamped on head determines tensile strength. Grade 8 > Grade 5 > Grade 2. Always confirm head marking matches specification requirement PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
MATERIAL HARDNESS RATING: 40.0 ROCKWELL C MINIMUM AND 51.5 ROCKWELL C MAXIMUM
•
USAGE DESIGN: INTERNAL
•
STRENGTH RATING: ERR-060
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-46049, COMP 1074 MIL SPEC 1ST MATERIAL RESPONSE AND MIL-S-46049, COMP 1075 MIL SPEC 2ND MATERIAL RESPONSE AND MIL-S-46049, COMP 1085 MIL SPEC 3RD MATERIAL RESPONSE
•
CROSS-SECTIONAL SHAPE STYLE: DOUBLE OVAL
•
OUTSIDE DIAMETER: 2.865 INCHES MINIMUM AND 2.890 INCHES MAXIMUM IN
•
MAJOR THICKNESS: 0.046 INCHES MINIMUM AND 0.052 INCHES MAXIMUM IN
•
INSIDE DIAMETER: 2.549 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
MATERIAL HARDNESS RATING40.0 ROCKWELL C MINIMUM AND 51.5 ROCKWELL C MAXIMUM
USAGE DESIGNINTERNAL
STRENGTH RATINGERR-060
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-46049, COMP 1074 MIL SPEC 1ST MATERIAL RESPONSE AND MIL-S-46049, COMP 1075 MIL SPEC 2ND MATERIAL RESPONSE AND MIL-S-46049, COMP 1085 MIL SPEC 3RD MATERIAL RESPONSE
CROSS-SECTIONAL SHAPE STYLEDOUBLE OVAL
OUTSIDE DIAMETER2.865 INCHES MINIMUM AND 2.890 INCHES MAXIMUM IN
MAJOR THICKNESS0.046 INCHES MINIMUM AND 0.052 INCHES MAXIMUM IN
INSIDE DIAMETER2.549 INCHES NOMINAL IN
CASEHARDENING INDICATORNOT CASEHARDENED
RING STYLESPECIAL FLAT
SUBSTITUTES & CROSS-REFERENCES 7
MIL-DTL-27426Reference document
Same NSN cross-reference
Reference document — Identification reference
M2742630166ASame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
626-001-9201Reference document
Same NSN cross-reference
Reference document — Secondary reference
RD15951-275Reference document
Same NSN cross-reference
Reference document — Secondary reference
WH-275Reference document
Same NSN cross-reference
Reference document — Secondary reference
3415-275PReference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is RR275?
RR275 is a GEAR RACK.
What parts can replace RR275?
There are 7 known substitutes for RR275: MIL-DTL-27426, M2742630166A, 626-001-9201 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for RR275?
RR275 is cataloged in the U.S. Government catalog under NSN 5325-00-664-2759. This indicates validated use in U.S. government and defense supply chains.
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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.