MS35191 fine-thread 82-degree flat-head screws.

// REFERENCE SIZES

MS35191 part-number and dimension table

Reference sizes for identification and quotation. Availability is confirmed by inquiry; the entries do not indicate Webson stock.

Head diameter is the maximum theoretical sharp-head diameter from the reviewed drawing, not the minimum finished head diameter. The head angle is nominally 82 degrees, with drawing limits of 80–82 degrees. Short screws can have undercut heads with separate height requirements.

// LENGTH CONVENTION

Measure the correct length

Length L includes the countersunk head. The length column preserves the decimal reference values printed in the reviewed table, including 0.125, 0.188 and 0.312. These are not added acceptance tolerances. Match the 82-degree head to the specified seat; MS24693 uses a different 100-degree head.

// ORDERING EXAMPLES

Read the part number within its family

MS35191-224 identifies a 4-48 screw with a 0.250-inch overall reference length. MS35191-268 is a 10-32 by 0.250-inch reference. Compare these with the coarse threads of MS35190; matching length and head angle do not establish the same part.

// MATERIAL AND CONFIGURATION

Preserve the finish and configuration

The reviewed issue specifies carbon steel and Type II, Class 3 cadmium plating to QQ-P-416 or MIL-C-81562. The table lists plain screws. An L after the dash number identifies a self-locking version under the reviewed requirements. Preserve the complete locking callout and its required issue when requesting pricing.

// RELATED REFERENCES

Compare related screw families

// DRAWING REQUIREMENTS

Match the governing drawing issue

Dimensions summarize MS35191G, sheets 1–2, 26 July 1976. These selected historical values identify the reviewed issue; the specification required by your drawing governs the supplied part.