The Aviation PointTechnical data sheet · theaviationpoint.com/parts/nuts/ms35690/
MS35690 nut — plain hex nut, UNC/UNF, 1/4 to 3 in.
Nut, Plain, Hexagon, UNC-2B and UNF-2B, from MS35690 Rev. E. Every row below is transcribed from the standard and has its own link.
MS35690 at a glance
MS35690Engineering drawing · dimensions in inches
Specification
Item
Value
Type
Plain hex nut
Material
Carbon steel per the procurement specification (grades B and C). CRES types 303 (UNS S30300), 304 (UNS S30400), 305 (UNS S30500), 410 (UNS S41000), 416 (UNS S41600) and 430 (UNS S43000) per ASTM A276-83 and A582-80. Brass: alloy 462 (UNS C46200) hard or 464 (UNS C46400) half-hard per QQ-B-637.
Locking
None (plain nut)
Item
Value
Finish
Cadmium plate per the procurement specification; zinc coating ASTM B633-78, Fe/Zn5 (5 um), Type II; phosphate coating DOD-P-16232, Type Z, Class 2; tin plate MIL-T-10727, Type I or II, .0001 in. thick (ASTM B545-83); CRES cleaned, descaled and passivated per ASTM A380-78; nickel plate per the procurement specification (Table II).
Procurement
FF-N-836
Status
Inactive for new design since 3 Feb 2000 (Notice 1; no longer used except for replacement purposes). Within the sheet, only the Table II dash numbers (3 sizes) are marked active; all others in Table III are for maintenance of existing equipment only.
Dimensions by size
Dimension, in
.2500-20 UNC-2B
.2500-28 UNF-2B
.3125-18 UNC-2B
.3125-24 UNF-2B
.3750-16 UNC-2B
.3750-24 UNF-2B
.4375-14 UNC-2B
.4375-20 UNF-2B
.5000-13 UNC-2B
.5000-20 UNF-2B
.5625-12 UNC-2B
.5625-18 UNF-2B
.6250-11 UNC-2B
.6250-18 UNF-2B
.7500-10 UNC-2B
.7500-16 UNF-2B
.8750-9 UNC-2B
.8750-14 UNF-2B
1.0000-8 UNC-2B
1.0000-12 UNF-2B
1.1250-7 UNC-2B
1.1250-12 UNF-2B
1.2500-7 UNC-2B
1.2500-12 UNF-2B
1.3750-6 UNC-2B
1.3750-12 UNF-2B
1.5000-6 UNC-2B
1.5000-12 UNF-2B
1.7500-5 UNC-2B
2.0000-4-1/2 UNC-2B
2.2500-4-1/2 UNC-2B
2.5000-4 UNC-2B
2.7500-4 UNC-2B
3.0000-4 UNC-2B
F — Width across flats
.4375 – .428
.4375 – .428
.5000 – .489
.5000 – .489
.5625 – .551
.5625 – .551
.6875 – .675
.6875 – .675
.7500 – .736
.7500 – .736
.8750 – .861
.8750 – .861
.9375 – .922
.9375 – .922
1.1250 – 1.088
1.1250 – 1.088
1.3125 – 1.269
1.3125 – 1.269
1.5000 – 1.450
1.5000 – 1.450
1.6875 – 1.631
1.6875 – 1.631
1.8750 – 1.812
1.8750 – 1.812
2.0625 – 1.994
2.0625 – 1.994
2.2500 – 2.175
2.2500 – 2.175
2.6250 – 2.538
3.0000 – 2.900
3.3750 – 3.262
3.7500 – 3.625
4.1250 – 3.988
4.5000 – 4.350
G — Width across corners
.505 – .488
.505 – .488
.577 – .557
.577 – .557
.650 – .628
.650 – .628
.794 – .768
.794 – .768
.866 – .840
.866 – .840
1.010 – .982
1.010 – .982
1.083 – 1.051
1.083 – 1.051
1.299 – 1.240
1.299 – 1.240
1.516 – 1.447
1.516 – 1.447
1.732 – 1.653
1.732 – 1.653
1.949 – 1.859
1.949 – 1.859
2.165 – 2.066
2.165 – 2.066
2.382 – 2.273
2.382 – 2.273
2.598 – 2.480
2.598 – 2.480
3.031 – 2.893
3.464 – 3.306
3.897 – 3.719
4.330 – 4.133
4.763 – 4.546
5.196 – 4.959
H — Thickness
.226 – .212
.226 – .212
.273 – .258
.273 – .258
.337 – .320
.337 – .320
.385 – .365
.385 – .365
.448 – .427
.448 – .427
.496 – .473
.496 – .473
.559 – .535
.559 – .535
.665 – .617
.665 – .617
.776 – .724
.776 – .724
.887 – .831
.887 – .831
.999 – .939
.999 – .939
1.094 – 1.030
1.094 – 1.030
1.206 – 1.138
1.206 – 1.138
1.317 – 1.245
1.317 – 1.245
1.540 – 1.460
1.763 – 1.675
1.970 – 1.874
2.193 – 2.089
2.415 – 2.303
2.638 – 2.518
Maximum – minimum as tabulated in MS35690 Rev. E; letters as on the standard's drawing.
Dimensions in inches; two optional designs (with or without a .016 approx. washer face, 30 deg +/-2 deg chamfer). Dimensions F, G, H depend only on the nominal size, so UNC and UNF threads of one size share them.
Dash numbers: grade B uncoated in the dash column, grade C uncoated in the next column (Table II / Table III). Table II also lists nickel-plated brass for .250-28 UNF (413), .3750-16 UNC (613) and .3750-24 UNF (633).
Cancelled dash numbers (Table IV, cancelled after 30 Sep 1965: grade A, grade B and C cadmium/zinc optional or phosphate, CRES passivated, brass, tin plated) are replaced per the interchangeability tables V and VI in the sheet (not transcribed here; MS35691 lists the equivalent substitutions for jam nuts).
Threads per FED-STD-H28/2; acceptability of screw threads per FED-STD-H28/20, System 21.
For design feature purposes this standard takes precedence over the referenced procurement documents.
