Diameter
Select the metric thread diameter or provide an Other / Custom requirement.
BharteeINDUSTRIESinquiry@bharteeindustries.inStart inquiryPARTIALLY THREADED · DIN 931
DIN 931 Partially Threaded Hex Bolts
DIN 931 defines a hex-head bolt with a partially threaded shank. The unthreaded portion can pass through the joint while the threaded end engages a nut or tapped component. Bhartee Industries captures each required diameter and length as a separate line while keeping common material, grade and finish selections easy to reuse.
- DIN 931 specification flow
- Pieces or Kg
- Matching hardware suggestions
- Custom pitch option
TECHNICAL SUMMARY
What to include in the inquiry
Use the applicable drawing and governing standard as the final authority. Other / Custom keeps unusual requirements inside the same RFQ.
Product standardDIN 931; confirm any ISO-equivalent requirement in the inquiry
ThreadingPartially threaded
DiameterMetric options with Other / Custom
LengthRequired for every line
PitchStandard coarse, fine or customer-specified
Materials / gradesMS 4.6, 8.8 or 10.9; SS304 or SS316; approved custom options
Quantity unitPieces or Kg
DocumentsMTC, surface-treatment report and PDI available as required
PRODUCT SELECTION
When to specify a partially threaded bolt
Choose the DIN 931 pattern when the assembly requires an unthreaded shank through part of the grip. The exact thread length is governed by the applicable standard and nominal bolt length; the customer should confirm the joint design and required grip before ordering.
Length
Enter the nominal bolt length required for each line item.
Thread pitch
The standard coarse pitch is suggested automatically; fine and customer-specified pitches remain available.
DIN 931 OR DIN 933?
The thread extent is the key difference
DIN 931 is partially threaded, while DIN 933 is fully threaded. Buyers should select by joint design rather than treating the two standards as interchangeable. If full-length thread engagement is required, review the DIN 933 product page.
DIN 931
Partially threaded shank; verify grip and standard thread length.
DIN 933
Thread extends along the specified fastener length, subject to standard geometry.
View detailsASSEMBLY COMPLETION
Add compatible M-size hardware
After a bolt line is configured, the inquiry builder can suggest Hex Nuts, Nylock Nuts, Dome / Cap Nuts, Plain / Flat Washers and Spring Washers of the same selected diameter. Finish compatibility follows the bolt selection and can be reviewed before the items are added.
FINISH AND DOCUMENTATION
State the performance requirement clearly
For mild and alloy steels, inquiry options include zinc electroplated blue or black, zinc-nickel silver or black, zinc-flake silver or black, phosphate and hot-dip galvanized finishes. Stainless steel is normally specified without a separate coating. Confirm the required finish and any reporting requirement in the RFQ.
BUYER QUESTIONS
Frequently asked questions
What is the difference between DIN 931 and DIN 933?
DIN 931 is a partially threaded hex bolt, while DIN 933 is a fully threaded hex-head screw. The correct selection depends on the joint and required grip.
Can DIN 931 bolts be ordered by weight?
The Bhartee Industries inquiry form accepts either Pieces or Kg for Hex Head Bolts. Final commercial confirmation follows technical review.
Can a fine thread pitch be requested?
Yes. Available fine pitches are shown by diameter, and Other / Custom can be used for a customer-specified thread requirement.
BUILD ONE MULTI-ITEM RFQ
Ready to specify Hex Head Bolts?
Add multiple sizes, review compatible items and provide buyer and delivery details only once at the end.
Prefer email? inquiry@bharteeindustries.in