MS51959 82-degree flat-head machine screws.

// PART IDENTIFICATION

82-degree countersunk head and coarse threads

MS51959 identifies cross-recessed, 82-degree flat-head machine screws in corrosion-resistant steel with UNC-2A threads. The selected unsuffixed entries are passivated 300-series stainless steel.

// STOCKED SELECTION

Stocked MS51959 part numbers

Selected stocked configurations are listed below. Dimensions are nominal identification references in inches; use the controlling specification and drawing for full tolerances and acceptance requirements.

Stocked items are subject to prior sale. Request a quote to confirm current availability and lead time.

// LENGTH CONVENTION

Overall length includes the head

For these flat-head screws, length is measured from the top of the head to the tip. MS51959-3 is a 2-56 by 1/4-inch selection; MS51959-13 is a 4-40 by 1/4-inch selection.

The same nominal length can occur under different dash numbers because the thread size also changes. Use the complete designation when ordering.

// HEAD COMPARISON

Keep the countersink angle with the part number

The 82-degree MS51959 head requires a matching seat. MS24693 uses a 100-degree head, while MS51957 has a raised pan head. Head angle and length convention belong in any comparison.

// SOURCE WITH WEBSON

Preserve the specified designation

The legacy MS51959 document names NASM51959 as its successor. Include the complete part number, quantity, required delivery date, governing issue and certification requirements with your inquiry.