// TECHNICAL RESOURCES
MS51967 coarse-thread finished hex nuts.
Find MS51967 nut part numbers, thread sizes, material and finish details, thickness and hex dimensions. Filter the table and request pricing for a selected part.
// DIMENSIONS & PART IDENTIFICATION
Nut thread, width across flats and height
Schematic only; not to scale. Letter labels are keys for this illustration. Use the applicable part specification for dimensions, tolerances and measurement conventions.
// PART IDENTIFICATION
Identify the nut family
MS51967 identifies plain hexagon carbon-steel nuts with cadmium plating and UNC-2B internal threads. This table selects 20 Grade B and Grade C references from 1/4-20 through 1-8. Canceled Grade A dash numbers are omitted.
// REFERENCE SIZES
MS51967 part-number and dimension table
Reference selections for identification and quotation. Webson confirms availability by inquiry; these rows do not indicate stocked inventory.
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| Part number | Thread | Material / finish | Width across flats limits (in) | Thickness limits (in) | Request pricing |
|---|---|---|---|---|---|
| MS51967-2 | 1/4-20 | Grade B carbon steel / cadmium | 0.428–0.4375 | 0.212–0.226 | Quote MS51967-2 → |
| MS51967-3 | 1/4-20 | Grade C carbon steel / cadmium | 0.428–0.4375 | 0.212–0.226 | Quote MS51967-3 → |
| MS51967-5 | 5/16-18 | Grade B carbon steel / cadmium | 0.489–0.5000 | 0.258–0.273 | Quote MS51967-5 → |
| MS51967-6 | 5/16-18 | Grade C carbon steel / cadmium | 0.489–0.5000 | 0.258–0.273 | Quote MS51967-6 → |
| MS51967-8 | 3/8-16 | Grade B carbon steel / cadmium | 0.551–0.5625 | 0.320–0.337 | Quote MS51967-8 → |
| MS51967-9 | 3/8-16 | Grade C carbon steel / cadmium | 0.551–0.5625 | 0.320–0.337 | Quote MS51967-9 → |
| MS51967-11 | 7/16-14 | Grade B carbon steel / cadmium | 0.675–0.6875 | 0.365–0.385 | Quote MS51967-11 → |
| MS51967-12 | 7/16-14 | Grade C carbon steel / cadmium | 0.675–0.6875 | 0.365–0.385 | Quote MS51967-12 → |
| MS51967-14 | 1/2-13 | Grade B carbon steel / cadmium | 0.736–0.7500 | 0.427–0.448 | Quote MS51967-14 → |
| MS51967-15 | 1/2-13 | Grade C carbon steel / cadmium | 0.736–0.7500 | 0.427–0.448 | Quote MS51967-15 → |
| MS51967-17 | 9/16-12 | Grade B carbon steel / cadmium | 0.861–0.8750 | 0.473–0.496 | Quote MS51967-17 → |
| MS51967-18 | 9/16-12 | Grade C carbon steel / cadmium | 0.861–0.8750 | 0.473–0.496 | Quote MS51967-18 → |
| MS51967-20 | 5/8-11 | Grade B carbon steel / cadmium | 0.922–0.9375 | 0.535–0.559 | Quote MS51967-20 → |
| MS51967-21 | 5/8-11 | Grade C carbon steel / cadmium | 0.922–0.9375 | 0.535–0.559 | Quote MS51967-21 → |
| MS51967-23 | 3/4-10 | Grade B carbon steel / cadmium | 1.088–1.1250 | 0.617–0.665 | Quote MS51967-23 → |
| MS51967-24 | 3/4-10 | Grade C carbon steel / cadmium | 1.088–1.1250 | 0.617–0.665 | Quote MS51967-24 → |
| MS51967-26 | 7/8-9 | Grade B carbon steel / cadmium | 1.269–1.3125 | 0.724–0.776 | Quote MS51967-26 → |
| MS51967-27 | 7/8-9 | Grade C carbon steel / cadmium | 1.269–1.3125 | 0.724–0.776 | Quote MS51967-27 → |
| MS51967-29 | 1-8 | Grade B carbon steel / cadmium | 1.450–1.5000 | 0.831–0.887 | Quote MS51967-29 → |
| MS51967-30 | 1-8 | Grade C carbon steel / cadmium | 1.450–1.5000 | 0.831–0.887 | Quote MS51967-30 → |
Dimensions are minimum–maximum limits in inches from the reviewed reference. Width across flats is the distance between opposite hex faces; thickness is the nut’s axial height. Across-flats limits describe the part, not the tolerance of a wrench or socket.
// ORDERING EXAMPLES
Read the complete part number
MS51967-2 and MS51967-3 both have 1/4-20 threads and the same listed dimensional limits. The dash numbers distinguish Grade B from Grade C. MS51967-14 is a 1/2-13 Grade B reference; MS51967-15 is Grade C. Keep the required grade with the complete part number.
// MATERIAL AND FINISH
Retain the material and finish requirement
The selected rows are cadmium-plated carbon steel in Grade B or Grade C. The reviewed specification requires finished nuts to meet the proof-load requirements of its procurement specification. The grade letters belong to the material classification; the listed ordering number uses the MS series and dash number. Do not infer proof load from dimensions alone.
// FAMILY COMPARISON
Compare related nut families
MS51968 uses fine internal threads. MS35649 is a machine-screw nut family with a different thickness envelope. A shared hex shape or nominal thread does not establish that the families have the same strength or geometry.
// DRAWING REQUIREMENTS
Match the governing specification issue
Dimensions summarize MS51967D, sheet 1, 30 March 1970.
The DLA record lists this family as inactive. The table summarizes selected historical dimensional references for purchasing identification; retain the governing issue and application requirements from your drawing.
Include the complete designation, quantity, required delivery date and certificate or traceability requirements with your inquiry.
// BUYER CHECKLIST
Prepare the requirement for quotation
- Complete designation, including all material, finish and locking suffixes.
- Quantity, required delivery date and controlling drawing or specification issue.
- Required certificates, source restrictions and lot traceability.
// SOURCE WITH WEBSON
Have a part number or bill of material?
Send the complete designation, quantity, required delivery date and documentation requirements. Webson will review your requirement for quotation.