The Aviation Point
The Aviation PointTechnical data sheet · theaviationpoint.com/parts/screws/ms35306/

MS35306 screw — hexagon

MS35306: hex head cap screw (finished hexagon bolt), alloy steel Grade 8, phosphate finish, UNF-2A, 1/4 to 1-1/2. Cancelled; dimensions and every dash number.

View PDF

MS35306 at a glance

Where to buy
MS35306 engineering drawing with dimensions
Engineering drawing · dimensions in inches

Specification

ItemValue
Headhexagon
Driveexternal hexagon
Thread seriesfine (UNF-2A)
MaterialAlloy steel, Grade 8 of the procurement specification.
ItemValue
Heat treatmentMinimum tensile strength 150,000 psi for diameters through 1-1/2 in; 125,000 psi for diameters over 1-1/2 in.
FinishPhosphate per MIL-C-16232, Type II.
ProcurementFF-S-85
StatusCheck the current issue before design use. Rev. B (6 May 1963): cancelled after 6 May 1963; use MS90727. MS90727 can replace the cancelled screws of the same size; the cancelled MS35306 cannot always replace MS90727 and is used only until existing stock is depleted.

Dimensions by size

Dimension, in1/4-28 UNF-2A5/16-24 UNF-2A3/8-24 UNF-2A7/16-20 UNF-2A1/2-20 UNF-2A9/16-18 UNF-2A5/8-18 UNF-2A3/4-16 UNF-2A7/8-14 UNF-2A1-12 UNF-2A1-1/8-12 UNF-2A1-1/4-12 UNF-2A1-3/8-12 UNF-2A1-1/2-12 UNF-2A
D body dia.2450 – .2500.3065 – .3125.3690 – .3750.4305 – .4375.4930 – .5000.5545 – .5625.6170 – .6250.7410 – .7500.8660 – .8750.9900 – 1.00001.1140 – 1.12501.2390 – 1.25001.3630 – 1.37501.4880 – 1.5000
A width across flats.4280 – .4375.4890 – .5000.5510 – .5625.6120 – .6250.7360 – .7500.7980 – .8125.9220 – .93751.1000 – 1.12501.2850 – 1.31251.4690 – 1.50001.6310 – 1.68751.8120 – 1.87501.9940 – 2.06252.1750 – 2.2500
W width across corners.4880 – .5050.5570 – .5770.6280 – .6500.6980 – .7220.8400 – .8660.9100 – .93801.0510 – 1.08301.2540 – 1.29901.4650 – 1.51601.6750 – 1.73201.8590 – 1.94902.0660 – 2.16502.2730 – 2.38202.4800 – 2.5980
H head height.1500 – .1630.1950 – .2110.2260 – .2430.2720 – .2910.3020 – .3230.3480 – .3710.3780 – .4030.4550 – .4830.5310 – .5630.5910 – .6270.6580 – .7180.7490 – .8130.8100 – .8780.9020 – .9740
R radius.009 – .023.009 – .023.009 – .023.009 – .023.009 – .023.021 – .041.021 – .041.021 – .041.041 – .062.062 – .093.062 – .093.062 – .093.062 – .093.062 – .093

Dimensions in inches, as tabulated in the standard (letters as on its drawing).

Part numbers and lengths

Part numbers by dash number, with size, length and length tolerance. The standard governs.

1/4-28 UNF-2A26 part numbers

Part no.Length, inTol.
MS35306-13/8+0/-1/32
MS35306-27/16+0/-1/32
MS35306-31/2+0/-1/32
MS35306-49/16+0/-1/32
MS35306-55/8+0/-1/32
MS35306-63/4+0/-1/32
MS35306-77/8+0/-1/32
MS35306-81+0/-1/32
MS35306-91-1/8+0/-1/16
MS35306-101-1/4+0/-1/16
MS35306-111-3/8+0/-1/16
MS35306-121-1/2+0/-1/16
MS35306-131-3/4+0/-1/16
MS35306-142+0/-1/16
MS35306-152-1/4+0/-3/32
MS35306-162-1/2+0/-3/32
MS35306-172-3/4+0/-3/32
MS35306-183+0/-3/32
MS35306-193-1/4+0/-3/32
MS35306-203-1/2+0/-3/32
MS35306-213-3/4+0/-3/32
MS35306-224+0/-3/32
MS35306-234-1/4+0/-3/32
MS35306-244-1/2+0/-3/32
MS35306-254-3/4+0/-3/32
MS35306-265+0/-3/32

5/16-24 UNF-2A26 part numbers

Part no.Length, inTol.
MS35306-273/8+0/-1/32
MS35306-287/16+0/-1/32
MS35306-291/2+0/-1/32
MS35306-309/16+0/-1/32
MS35306-315/8+0/-1/32
MS35306-323/4+0/-1/32
MS35306-337/8+0/-1/32
MS35306-341+0/-1/32
MS35306-351-1/8+0/-1/16
MS35306-361-1/4+0/-1/16
MS35306-371-3/8+0/-1/16
MS35306-381-1/2+0/-1/16
MS35306-391-3/4+0/-1/16
MS35306-402+0/-1/16
MS35306-412-1/4+0/-3/32
MS35306-422-1/2+0/-3/32
MS35306-432-3/4+0/-3/32
MS35306-443+0/-3/32
MS35306-453-1/4+0/-3/32
MS35306-463-1/2+0/-3/32
MS35306-473-3/4+0/-3/32
MS35306-484+0/-3/32
MS35306-494-1/4+0/-3/32
MS35306-504-1/2+0/-3/32
MS35306-514-3/4+0/-3/32
MS35306-525+0/-3/32

3/8-24 UNF-2A26 part numbers

Part no.Length, inTol.
MS35306-533/8+0/-1/32
MS35306-547/16+0/-1/32
MS35306-551/2+0/-1/32
MS35306-569/16+0/-1/32
MS35306-575/8+0/-1/32
MS35306-583/4+0/-1/32
MS35306-597/8+0/-1/32
MS35306-601+0/-1/32
MS35306-611-1/8+0/-1/16
MS35306-621-1/4+0/-1/16
MS35306-631-3/8+0/-1/16
MS35306-641-1/2+0/-1/16
MS35306-651-3/4+0/-1/16
MS35306-662+0/-1/16
MS35306-672-1/4+0/-3/32
MS35306-682-1/2+0/-3/32
MS35306-692-3/4+0/-3/32
MS35306-703+0/-3/32
MS35306-713-1/4+0/-3/32
MS35306-723-1/2+0/-3/32
MS35306-733-3/4+0/-3/32
MS35306-744+0/-3/32
MS35306-754-1/4+0/-3/32
MS35306-764-1/2+0/-3/32
MS35306-774-3/4+0/-3/32
MS35306-785+0/-3/32

7/16-20 UNF-2A25 part numbers

Part no.Length, inTol.
MS35306-797/16+0/-1/32
MS35306-801/2+0/-1/32
MS35306-819/16+0/-1/32
MS35306-825/8+0/-1/32
MS35306-833/4+0/-1/32
MS35306-847/8+0/-1/32
MS35306-851+0/-1/32
MS35306-861-1/8+0/-1/16
MS35306-871-1/4+0/-1/16
MS35306-881-3/8+0/-1/16
MS35306-891-1/2+0/-1/16
MS35306-901-3/4+0/-1/16
MS35306-912+0/-1/16
MS35306-922-1/4+0/-3/32
MS35306-932-1/2+0/-3/32
MS35306-942-3/4+0/-3/32
MS35306-953+0/-3/32
MS35306-963-1/4+0/-3/32
MS35306-973-1/2+0/-3/32
MS35306-983-3/4+0/-3/32
MS35306-994+0/-3/32
MS35306-1004-1/4+0/-3/32
MS35306-1014-1/2+0/-3/32
MS35306-1024-3/4+0/-3/32
MS35306-1035+0/-3/32

1/2-20 UNF-2A26 part numbers

Part no.Length, inTol.
MS35306-1041/2+0/-1/32
MS35306-1059/16+0/-1/32
MS35306-1065/8+0/-1/32
MS35306-1073/4+0/-1/32
MS35306-1087/8+0/-1/32
MS35306-1091+0/-1/32
MS35306-1101-1/8+0/-1/16
MS35306-1111-1/4+0/-1/16
MS35306-1121-3/8+0/-1/16
MS35306-1131-1/2+0/-1/16
MS35306-1141-3/4+0/-1/16
MS35306-1152+0/-1/16
MS35306-1162-1/4+0/-3/32
MS35306-1172-1/2+0/-3/32
MS35306-1182-3/4+0/-3/32
MS35306-1193+0/-3/32
MS35306-1203-1/4+0/-3/32
MS35306-1213-1/2+0/-3/32
MS35306-1223-3/4+0/-3/32
MS35306-1234+0/-3/32
MS35306-1244-1/4+0/-3/32
MS35306-1254-1/2+0/-3/32
MS35306-1264-3/4+0/-3/32
MS35306-1275+0/-3/32
MS35306-1285-1/2+0/-3/32
MS35306-1296+0/-3/32

9/16-18 UNF-2A25 part numbers

Part no.Length, inTol.
MS35306-1309/16+0/-1/32
MS35306-1315/8+0/-1/32
MS35306-1323/4+0/-1/32
MS35306-1337/8+0/-1/32
MS35306-1341+0/-1/32
MS35306-1351-1/8+0/-1/16
MS35306-1361-1/4+0/-1/16
MS35306-1371-3/8+0/-1/16
MS35306-1381-1/2+0/-1/16
MS35306-1391-3/4+0/-1/16
MS35306-1402+0/-1/16
MS35306-1412-1/4+0/-3/32
MS35306-1422-1/2+0/-3/32
MS35306-1432-3/4+0/-3/32
MS35306-1443+0/-3/32
MS35306-1453-1/4+0/-3/32
MS35306-1463-1/2+0/-3/32
MS35306-1473-3/4+0/-3/32
MS35306-1484+0/-3/32
MS35306-1494-1/4+0/-3/32
MS35306-1504-1/2+0/-3/32
MS35306-1514-3/4+0/-3/32
MS35306-1525+0/-3/32
MS35306-1535-1/2+0/-3/32
MS35306-1546+0/-3/32

5/8-18 UNF-2A24 part numbers

Part no.Length, inTol.
MS35306-1555/8+0/-1/32
MS35306-1563/4+0/-1/32
MS35306-1577/8+0/-1/32
MS35306-1581+0/-1/32
MS35306-1591-1/8+0/-1/16
MS35306-1601-1/4+0/-1/16
MS35306-1611-3/8+0/-1/16
MS35306-1621-1/2+0/-1/16
MS35306-1631-3/4+0/-1/16
MS35306-1642+0/-1/16
MS35306-1652-1/4+0/-3/32
MS35306-1662-1/2+0/-3/32
MS35306-1672-3/4+0/-3/32
MS35306-1683+0/-3/32
MS35306-1693-1/4+0/-3/32
MS35306-1703-1/2+0/-3/32
MS35306-1713-3/4+0/-3/32
MS35306-1724+0/-3/32
MS35306-1734-1/4+0/-3/32
MS35306-1744-1/2+0/-3/32
MS35306-1754-3/4+0/-3/32
MS35306-1765+0/-3/32
MS35306-1775-1/2+0/-3/32
MS35306-1786+0/-3/32

3/4-16 UNF-2A23 part numbers

Part no.Length, inTol.
MS35306-1793/4+0/-1/32
MS35306-1807/8+0/-1/32
MS35306-1811+0/-1/32
MS35306-1821-1/8+0/-1/16
MS35306-1831-1/4+0/-1/16
MS35306-1841-3/8+0/-1/16
MS35306-1851-1/2+0/-1/16
MS35306-1861-3/4+0/-1/16
MS35306-1872+0/-1/16
MS35306-1882-1/4+0/-3/32
MS35306-1892-1/2+0/-3/32
MS35306-1902-3/4+0/-3/32
MS35306-1913+0/-3/32
MS35306-1923-1/4+0/-3/32
MS35306-1933-1/2+0/-3/32
MS35306-1943-3/4+0/-3/32
MS35306-1954+0/-3/32
MS35306-1964-1/4+0/-3/32
MS35306-1974-1/2+0/-3/32
MS35306-1984-3/4+0/-3/32
MS35306-1995+0/-3/32
MS35306-2005-1/2+0/-3/32
MS35306-2016+0/-3/32

7/8-14 UNF-2A22 part numbers

Part no.Length, inTol.
MS35306-2027/8+0/-1/16
MS35306-2031+0/-1/16
MS35306-2041-1/8+0/-1/8
MS35306-2051-1/4+0/-1/8
MS35306-2061-3/8+0/-1/8
MS35306-2071-1/2+0/-1/8
MS35306-2081-3/4+0/-1/8
MS35306-2092+0/-1/8
MS35306-2102-1/4+0/-3/16
MS35306-2112-1/2+0/-3/16
MS35306-2122-3/4+0/-3/16
MS35306-2133+0/-3/16
MS35306-2143-1/4+0/-3/16
MS35306-2153-1/2+0/-3/16
MS35306-2163-3/4+0/-3/16
MS35306-2174+0/-3/16
MS35306-2184-1/4+0/-3/16
MS35306-2194-1/2+0/-3/16
MS35306-2204-3/4+0/-3/16
MS35306-2215+0/-3/16
MS35306-2225-1/2+0/-3/16
MS35306-2236+0/-3/16

1-12 UNF-2A21 part numbers

Part no.Length, inTol.
MS35306-2241+0/-1/16
MS35306-2251-1/8+0/-1/8
MS35306-2261-1/4+0/-1/8
MS35306-2271-3/8+0/-1/8
MS35306-2281-1/2+0/-1/8
MS35306-2291-3/4+0/-1/8
MS35306-2302+0/-1/8
MS35306-2312-1/4+0/-3/16
MS35306-2322-1/2+0/-3/16
MS35306-2332-3/4+0/-3/16
MS35306-2343+0/-3/16
MS35306-2353-1/4+0/-3/16
MS35306-2363-1/2+0/-3/16
MS35306-2373-3/4+0/-3/16
MS35306-2384+0/-3/16
MS35306-2394-1/4+0/-3/16
MS35306-2404-1/2+0/-3/16
MS35306-2414-3/4+0/-3/16
MS35306-2425+0/-3/16
MS35306-2435-1/2+0/-3/16
MS35306-2446+0/-3/16

1-1/8-12 UNF-2A20 part numbers

Part no.Length, inTol.
MS35306-2451-1/8+0/-1/8
MS35306-2461-1/4+0/-1/8
MS35306-2471-3/8+0/-1/8
MS35306-2481-1/2+0/-1/8
MS35306-2491-3/4+0/-1/8
MS35306-2502+0/-1/8
MS35306-2512-1/4+0/-3/16
MS35306-2522-1/2+0/-3/16
MS35306-2532-3/4+0/-3/16
MS35306-2543+0/-3/16
MS35306-2553-1/4+0/-3/16
MS35306-2563-1/2+0/-3/16
MS35306-2573-3/4+0/-3/16
MS35306-2584+0/-3/16
MS35306-2594-1/4+0/-3/16
MS35306-2604-1/2+0/-3/16
MS35306-2614-3/4+0/-3/16
MS35306-2625+0/-3/16
MS35306-2635-1/2+0/-3/16
MS35306-2646+0/-3/16

1-1/4-12 UNF-2A19 part numbers

Part no.Length, inTol.
MS35306-2651-1/4+0/-1/8
MS35306-2661-3/8+0/-1/8
MS35306-2671-1/2+0/-1/8
MS35306-2681-3/4+0/-1/8
MS35306-2692+0/-1/8
MS35306-2702-1/4+0/-3/16
MS35306-2712-1/2+0/-3/16
MS35306-2722-3/4+0/-3/16
MS35306-2733+0/-3/16
MS35306-2743-1/4+0/-3/16
MS35306-2753-1/2+0/-3/16
MS35306-2763-3/4+0/-3/16
MS35306-2774+0/-3/16
MS35306-2784-1/4+0/-3/16
MS35306-2794-1/2+0/-3/16
MS35306-2804-3/4+0/-3/16
MS35306-2815+0/-3/16
MS35306-2825-1/2+0/-3/16
MS35306-2836+0/-3/16

1-3/8-12 UNF-2A18 part numbers

Part no.Length, inTol.
MS35306-2841-3/8+0/-1/8
MS35306-2851-1/2+0/-1/8
MS35306-2861-3/4+0/-1/8
MS35306-2872+0/-1/8
MS35306-2882-1/4+0/-3/16
MS35306-2892-1/2+0/-3/16
MS35306-2902-3/4+0/-3/16
MS35306-2913+0/-3/16
MS35306-2923-1/4+0/-3/16
MS35306-2933-1/2+0/-3/16
MS35306-2943-3/4+0/-3/16
MS35306-2954+0/-3/16
MS35306-2964-1/4+0/-3/16
MS35306-2974-1/2+0/-3/16
MS35306-2984-3/4+0/-3/16
MS35306-2995+0/-3/16
MS35306-3005-1/2+0/-3/16
MS35306-3016+0/-3/16

1-1/2-12 UNF-2A17 part numbers

Part no.Length, inTol.
MS35306-3021-1/2+0/-1/8
MS35306-3031-3/4+0/-1/8
MS35306-3042+0/-1/8
MS35306-3052-1/4+0/-3/16
MS35306-3062-1/2+0/-3/16
MS35306-3072-3/4+0/-3/16
MS35306-3083+0/-3/16
MS35306-3093-1/4+0/-3/16
MS35306-3103-1/2+0/-3/16
MS35306-3113-3/4+0/-3/16
MS35306-3124+0/-3/16
MS35306-3134-1/4+0/-3/16
MS35306-3144-1/2+0/-3/16
MS35306-3154-3/4+0/-3/16
MS35306-3165+0/-3/16
MS35306-3175-1/2+0/-3/16
MS35306-3186+0/-3/16

Part number

How a MS35306 part number is built, segment by segment

What each code means

PartMeaning
FormatMS35306-<dash number>
ExampleMS35306-1: 1/4-28 UNF-2A, 3/8 long
Length tolerance, size 3/4 and under+0/-1/32 to 1; +0/-1/16 over 1 to 2; +0/-3/32 over 2 to 6
Length tolerance, size 7/8 and over+0/-1/16 to 1; +0/-1/8 over 1 to 2; +0/-3/16 over 2 to 6
DashDash number selects thread size and length (1 to 318)

Notes from the standard

  • Cancelled: for design and replacement use MS90727 of the same size.
  • Minimum thread length: twice the diameter plus 1/4 in for lengths up to and including 6 in; tolerance plus 3/16 in or 2-1/2 threads, whichever is greater. On products too short for the minimum thread length, the distance from the bearing surface of the head to the first complete thread does not exceed 2-1/2 threads for sizes up to and including 1 in, and 3-1/2 threads for larger sizes.
  • Threads per Screw-Thread Standards for Federal Services, Handbook H-28. Raised head markings preferred, stamping acceptable.
  • Approved data governs. Use the screw the SRM, drawing or IPC calls for.

Where to buy

AmericaDistributor coming soonOur partner for this region is on its way
EuropeDistributor coming soonOur partner for this region is on its way
OceaniaDistributor coming soonOur partner for this region is on its way

Distributor? Get listed →

Distributors coming soon.

Keep going

Calculators

CalculatorPart Number Equivalent Cross-Reference & DecoderType any MS35306 number and land on its row.CalculatorDistributor finderFind where to buy aircraft part numbers

Guides

GuideASNA fastenersHow to read ASNA blind bolt and rivet numbersChartFastener cross-referenceFrequent fastener crosses with their supersession status

How to do it

Standard practiceTorquingHow to torque aircraft bolts

Data sheets

Data sheetScrewsThe family side by side.Data sheetMS35275Screw, Machine — Drilled Fillister Head, Slotted, Corrosion Resisting Steel, Passivated, UNC-2AData sheetMS51959Screw, Machine, Flat Countersunk Head, 82°, Cross-Recessed, Corrosion-Resistant Steel, UNC-2A

Books

Fasteners & HardwareBookFasteners & HardwareFastener types and codes, sizes, tools and substitutes in one reference. Coming soon.

Sources

Educational reference only. not approved data. Always consult the applicable SRM, AMM, or AC 43.13-1B and your certifying authority.
esc
↑↓ navigate↵ openesc close