IFB 91F-24 Special Shoulder Bolt Specification.pdf
PDF 134 KB Posted
- Solicitation number
- BD-24-1206-40000-40000-103226
- Issued by
- Suffolk County, Massachusetts
About this file
This document is the technical specification for Hex Slotted Nuts as part of IFB 91F-24 Shoulder Bolts, Castle Nuts, Cotter Pins, a state and local contract opportunity issued by the Massachusetts Department of Transportation (MassDOT). The specification details the dimensional requirements for Hex Slotted Nuts ranging from 1/4" to 4.5" in diameter, including width across flats, thickness, width across corners, bearing surface diameter, countersink diameter, slot width, and other critical measurements. This contract opportunity is for the supply of shoulder bolts, castle nuts, and cotter pins to support MassDOT's Maintenance of Way (MOW) operations.
The document does not provide details on pricing, set-asides, incumbent suppliers, funding sources, or other commercial terms. It focuses solely on the technical specifications for the hex slotted nuts required under this contract. Interested suppliers should review the full IFB package for details on the solicitation process, submission requirements, and commercial terms.
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Other files
| File | Type | Posted |
|---|---|---|
| IFB 91F-24 Track Bolts Bid Document.docx | DOCX document | |
| Minimum Insurance Requirements~1.docx | DOCX document |
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Text version
Hex Slotted Nuts 10/9/15
.016
Approx.
S
T
Alternative Design
Washer Faced
Flat Bottom Slots
S
T
Table I: Dimensions for Hex Slotted Nuts (refer to ASME/ANSI B18.2.2 for full requirements)
Nominal
Diameter
F
Width Across
Flats
H
Thickness
(Full Nut)
G
Width Across
Corners
Bearing Surface
Diameter
Counter-sink
Diameter
T.I.R
T
Unslotted
Thickness
S
Slot Width
1/4 .438/.428 .226/.212 .505/.488 .438/.407 .280 .015 .14/.12 .10/.07 5/16 .500/.489 .273/.258 .577/.557 .500/.465 .342 .016 .18/.16 .12/.09 3/8 .562/.551 .337/.320 .650/.628 .562/.523 .405 .017 .21/.19 .15/.12
7/16 .688/.675 .385/.365 .794/.768 .688/.641 .472 .018 .23/.21 .15/.12 1/2 .750/.736 .448/.427 .866/.840 .750/.699 .540 .019 .29/.27 .18/.15
9/16 .875/.861 .496/.473 1.010/.982 .875/.818 .607 .020 .31/.29 .18/.15 5/8 .938/.922 .559/.535 1.083/1.051 .938/.876 .675 .021 .34/.32 .24/.18 3/4 1.125/1.088 .665/.617 .810 .023 .40/.38 .24/.18 7/8 1.312/1.269 .776/.724 .945 .025 .52/.49 .24/.18 1 1.500/1.450 .887/.831 1.080 .027 .59/.56 .30/.24
1 1/8 1.688/1.631 .999/.939
1.299/1.240 1.125/1.034 1.516/1.447 1.312/1.206 1.732/1.653 1.500/1.377 1.949/1.859 1.688/1.549 1.215 .030 .64/.61 .33/.24
1 1/4 1.350 .033 .70/.67 .40/.31 1 3/8 1.485 .036 .82/.78 .40/.31 1 1/2 1.620 .039 .86/.82 .46/.37 1 5/8 1.755 .043 .97/.93 .46/.37 1 3/4 1.890 .046 1.02/.98 .52/.43 1 7/8 2.025 .049 1.07/1.03 .52/.43
2 2.160 .052 1.19/1.14 .52/.43 2 1/4 2.430 .059 1.39/1.34 .52/.43 2 1/2 2.700 .065 1.48/1.43 .64/.55 2 3/4
1.875/1.812 1.094/1.030 2.165/2.066 1.875/1.721 2.062/1.994 1.206/1.138 2.382/2.273 2.060/1.894 2.250/2.175 1.317/1.245 2.598/2.480 2.250/2.066 2.438/2.356 1.444/1.353 2.815/2.686 2.438/2.238 2.625/2.538 1.540/1.460 3.031/2.893 2.625/2.411 2.812/2.718 1.667/1.567 3.248/3.100 2.812/2.582
3.000/2.900 1.763/1.675 3.464/3.306 3.000/2.755 3.375/3.262 1.986/1.890 3.897/3.719 3.375/3.099 3.750/3.625 2.209/2.104 4.330/4.133 3.750/3.444 4.125/3.988 2.431/2.319 4.763/4.546 4.125/3.789 2.970 .072 1.70/1.64 .64/.55
3 4.500/4.350 2.685/2.534 5.196/4.959 4.500/4.132 3.240 .078 1.89/1.83 .71/.62 Diameters above 5/8” may be double chamfer or washer faced The contour of slot bottom is optional.
sruge Highlight sruge Highlight
2 1/2"
1/2"
7/64" 1/4" Dia
MBTA MOW
COTTER PIN FOR 1" CASTLE NUT
http://www.mcmaster.com
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