Composi-Lok II, Monogram
MBF2110-5-450
Monogram Composi-Lok II: "high strength blind bolt for composite and metallic materials" (catalog).
- Head Low profile protruding head
- Diameter 5/32" (-5)
- Grip .400-.450"
- Material Titanium
- Lead-time risk High
Install tool MP550BFDN-5AA, proprietary · Exact nose, every brand · Variable stack? Plan grips
What the government paidlast DLA award $5.60 ea, 2026-08-11; production lead time 152 days
| Award date | Qty | Each | CAGE | PN on award |
|---|---|---|---|---|
| 2026-08-11 | 746 | $5.60 | 1BRD5 | MBF 2110-5-450 |
| 2025-12-19 | 150 | $7.64 | 2N935 | MBF 2110-5-450 |
| 2025-10-19 | 262 | $7.64 | 2N935 | MBF 2110-5-450 |
| 2025-05-12 | 144 | $7.64 | 2N935 | MBF 2110-5-450 |
| 2025-05-09 | 145 | $7.64 | 2N935 | MBF 2110-5-450 |
| 2024-12-12 | 80 | $5.85 | 2G586 | MBF 2110-5-450 |
| 2024-11-14 | 29 | $5.85 | 2G586 | MBF 2110-5-450 |
| 2024-10-17 | 349 | $5.85 | 2G586 | MBF 2110-5-450 |
Latest 8 of 18 awards. Median unit price by year: 2026 $5.60 ea (1 award) · 2025 $7.64 ea (4 awards) · 2024 $5.85 ea (9 awards) · 2023 $6.10 ea (4 awards)
- DLA lead time: production 152 days, administrative 91 days (snapshot 2026-09-16).
DLA prices at DLA quantities, not a quote.Source
DLA award prices at DLA quantities and terms, not a commercial quote. Each award may bundle packaging, delivery and inspection terms that a commercial buy does not. Vendors are shown by CAGE code only.
Joined through the NSN that DLA FLIS records for this part number. A part number on an award is the one cited on that award line; the same NSN can be bought under several part numbers. Awards loaded: 2023-01-03 to 2026-09-15.
Source: DLA FOIA Electronic Reading Room ↗, public FOIA releases. Files:
- 2023ContHist.zip/2023ContractHistory.txt (Contract History, snapshot 2024-06-24)
- 2024ContHist.zip/2024ContractHistory.txt (Contract History, snapshot 2025-08-07)
- contracthist2025.zip/contracthist2025.txt (Contract History, snapshot 2026-04-07)
- 2026-09-16-1038_contracthist.zip/2026-09-16-1038_contracthist.txt (Contract History, snapshot 2026-09-16)
- 2026-09-16-1038_ALTPLT.zip/2026-09-16-1038_ALTPLT.txt (ALT/PLT lead times, snapshot 2026-09-16)
- 2026-09-16-1038_OHandBO.zip/2026-09-16-1038_OHandBO_SEP2026.txt (On hand and backorder, snapshot 2026-09-16)
Compiled 2026-10-02.
CAD for MBF2110-5-450
| Family | Composi-Lok II (Monogram) |
|---|---|
| Head style | Low profile protruding head (source: Monogram drawing MBF2110 Rev AB, title block, Tables I, III, IV, material notes) |
| Nominal diameter | 5/32" (-5) |
| Grip | max grip .450" (grip range .400-.450", MBF2110 Rev AB grip table) |
| Material | Titanium. Nut: 6Al-4V titanium alloy; screw: A286 CRES; sleeve: 304 CRES |
Decoded from the published numbering scheme; not a claim that this exact dash number is a stocked SKU, and not a certified design authority. Always verify against the controlling drawing, spec, and your stress group.
Dimensions
| A | Head diameter | .354/.334 |
| D | Nut shank diameter | .1645/.1625 |
| G | Max grip + G: datum to the end of the nut shank | .017(ref) |
| H | Head height | .060/.053 |
| L | Max grip + L: datum to the end of the screw | .512(ref) |
| Recom. Hole | Drilled hole | .168/.165 |
All dimensions (19)Fewer dimensions
| E | SLEEVE and SCREW head diameter (2X) | .1640max |
| F | SCREW wrench flats, on the tail | .085/.080 |
| R | NUT head-to-shank radius | .030max |
| T | DRIVE NUT hex across flats | .375(ref) |
| Z | Height of the cylindrical head edge | .030max |
| Min Avail. Grip | Min available grip dash | -100 |
| J | Installed blind head diameter | .250min |
| K | Installed: blind side protrusion | .300max |
| Break-Off | Screw break-off, measured from the skin surface | +.103/-.000⑤ |
| Tensile | Tensile structural failure, min (lbs) | 900min, lbs |
| Double Shear | Double shear, min (lbs) | 3150min, lbs |
| Locking Torque | Locking torque, min (in-lbs) | 1.0min, in-lbs |
| Grip limits | Dash 5-450 | .400-.450 |
As printed on MBF2110 Rev AB sheet 1 ↗. Letters match the drawing.
Some features are scaled from the figure, not dimensioned.Scaled features
Scaled from the drawing's figure (not drawing dimensions)
| Component / feature | Scaled as | Model (in) |
|---|---|---|
| NUTnut nose diameter at its end (diameter) | 0.768 x D | .1255 |
| NUTnut nose end, from the datum | 0.162 x L - G | -.5472 |
| NUTnut bore = screw thread crest diameter (diameter) | 0.713 x D | .1166 |
| SCREWscrew thread crest diameter (threads not modelled) | 0.713 x D | .1166 |
| SLEEVEsleeve bore over the nut nose and the insert (diameter) | 0.839 x D | .1371 |
| SLEEVEsleeve bore beyond the insert (diameter) | 0.729 x D | .1192 |
| INSERTinsert outside diameter (= sleeve bore) | 0.839 x D | .1371 |
| INSERTinsert inside diameter (= sleeve bore beyond the insert) | 0.729 x D | .1192 |
| INSERTinsert end, from the datum | 0.368 x L - G | -.6490 |
| SLEEVEcrimp line (start of the crimped band), from the datum | 0.724 x L - G | -.8252 |
| SCREWscrew head top (sleeve end), from the datum | 0.826 x L - G | -.8761 |
| SCREWscrew head corner radius | 0.062 x E | .0101 |
| SLEEVEsleeve top, from the datum (where the scaled nose meets the scaled sleeve bore) | 0.112 x L - G | -.5227 |
| NUTnut nose taper (included angle) | angle, as drawn | 26.6° |
| DRIVE NUTdrive nut length | 1.064 x T | .3992 |
| DRIVE NUTdrive nut bearing diameter (cone end on the head) | 0.684 x T | .2567 |
| DRIVE NUTdrive nut bearing cone (half angle from the axis) | angle, as drawn | 30.6° |
| SCREWscrew tail beyond the drive nut | 1.073 x T | .4025 |
| SCREWwrench flats run: tail end to the drive nut (as drawn) | as drawn | .4025 |
| NUThead chamfer above the Z edge (angle from the axis) | angle, as drawn | 44.5° |
Measured on MBF2110 Rev AB sheet 1 figure at 300 dpi and kept as a ratio to a dimension this part number prints. Figure scale 591.5 px/in, fitting row -8, taken from A and E; checked against D (+1.4%), T (+1.4%), F (+3.4%), L - G (+2.0%).
Also printed in MBF2110 Rev AB for this part
| Recommended hole | .165-.168 in (MBF2110 Rev AB sheet 1) |
|---|---|
| Installed blind head | J .250 in min diameter (MBF2110 Rev AB sheet 1) |
| Installed protrusion | K .300 in max (TYPICAL INSTALLATION) (MBF2110 Rev AB sheet 1) |
| Break-off limits | +.103 -.000 in, measured from the skin surface (MBF2110 Rev AB sheet 1) |
| Tensile | 900 lbs min (structural failure) (MBF2110 Rev AB sheet 1) |
| Double shear | 3150 lbs min (MBF2110 Rev AB sheet 1) |
| Locking torque | 1.0 in-lbs min (MBF2110 Rev AB sheet 1) |
| Min available grip | dash -100 (MBF2110 Rev AB sheet 1) |
| Material and heat treat | NUT: 6Al-4V TITANIUM ALLOY PER AMS-T-9047 STA OR AMS4928 OR AMS4967 HEAT TREATED PER AMS-H-81200 TO 95 KSI SHEAR STRENGTH MINIMUM. MAXIMUM HYDROGEN CONTENT 125 PPM. SCREW: A286 CRES PER AMS5731, AMS5732 OR AMS5737 HEAT TREATED TO 175 KSI TENSILE MINIMUM. SLEEVE: 304 CRES PER AMS5639, FULLY ANNEALED. INSERT: ACETAL PER ASTM-D6778 DRIVE NUT: MILD STEEL (MBF2110 Rev AB material and finish notes) |
| Finish | ( - ) NUT: KAL-GARD ANN-RO #1012 CONVERSION COATING OR PHOSPHATE FLOURIDE PER MONOGRAM SPECIFICATION PS741, MAY BE USED AT MANUFACTURER'S OPTION. SLEEVE AND SCREW: PASSIVATE PER AMS2700, KAL-GARD ANN-RO #1013 CONVERSION COATING OPTIONAL. INSERT: NONE DRIVE NUT: COLOR GRAY (MBF2110 Rev AB material and finish notes) |
| Lubricant | SOLID FILM LUBRICANT PER AS5272 TYPE I OR TYPE II. PARAFFIN WAX, OR CETYL ALCOHOL PER AS87132 (AS REQUIRED FOR PERFORMANCE). (SEE FINISH CODE FOR ADDITIONAL RESTRICTIONS). (MBF2110 Rev AB material and finish notes) |
Series and strength (datasheet)
MBF2110 · MBF2111 · MBF2112 · MBF2113 · MBF2120 · MBF2121 · e.g. MBF2112-6-500
Rated shear 75 KSI (catalog comparison chart, MBF2112-06-500); 3/16" (-6) double shear 4,600 lb min, tensile 1,400 lb min, all materials & head styles (MBF2003 Table 10A).
Datasheet (PDF) ↗Section from Monogram drawing MBF2110 Rev AB ↗ sheet 1.Drawing notes
Model: Monogram drawing MBF2110 Rev AB
Envelope model, not manufacturer CAD.Model details
MBF2110-5-450, manufacturer nominal. Simplified component model from Monogram drawing MBF2110 Rev AB sheet 1. Manufacturer nominal: printed values, the mean where only two limits are printed. Flush heads hold the printed head angle; the head depth is derived. Not manufacturer CAD. Verify against the current drawing before use. One named solid per component as the drawing calls them out (NUT, SCREW, SLEEVE, INSERT and, where the drawing has one, DRIVE NUT). Features the drawing shows without a dimension are scaled from its figure and listed as scaled in the STEP header; threads are not modelled. Axis +Z, head up, z = 0 at the face the head bears on. STEP (AP214) is in inches; STL has no units and is written in millimetres.
Other head styles, same diameter and grip
- MBF2111-5-450 reduced protruding hex head
- MBF2112-5-450 100° flush head
- MBF2113-5-450 130° flush head
MBF2110 grip chart: 5/32" (-5)
Every catalogued max-grip dash number at this diameter. Stack thickness must fall inside the fastener's grip range: see the design calculators.
Other diameters at this grip:
Threaded / torqued · 4 steps
1/4Inserted
“Insert the fastener in the hole. The Composi-Lok® II can be inserted in a properly prepared hole without interference.”
Monogram MBF2003 Rev AG (Composi-Lok II install spec), p.17, §7.2 ↗
Drawing traced from: Figure 15, left.
Source images (6): patent and government drawings
A patent drawing shows the patented design, which can differ in detail from today's catalog part. Each image says why it is tied to this family.
Required tooling, every brand
MBF2110-5-450 · diameter -5 (decoded) · Composi-Lok II tool tables
From the fastener's own process document
- MP550BFDN-5AA (MP550BF with MPPBF-08 + MPBF-05) Standard · Monogram MBF2003 Rev AG (Composi-Lok II install spec), p.4, Table 1 ↗
- MH75BFDN-5AA (MH75 with MHPDN-01 + MHBF-05) Standard · Monogram MBF2003 Rev AG (Composi-Lok II install spec), p.9, Table 6 ↗
- MRT550BFDN-5AA (MRT550BF with MRTPBF-08 + MRTBF-5) Right angle · Monogram MBF2003 Rev AG (Composi-Lok II install spec), p.5, Table 2 ↗
- MRC550BFDN-5AA (MRC550 with MRCPDN-01 + MRCBF-05) Close quarter · Monogram MBF2003 Rev AG (Composi-Lok II install spec), p.6, Table 3 ↗
- MRCR250BFDN-5AA (MRCR250 with MRCRPDN-01 + MRCRMWBF-05) Close quarter · Monogram MBF2003 Rev AG (Composi-Lok II install spec), p.7, Table 4 ↗
- MR550BFDN-5AA (MR550 with MRPDN-01A + MRBF-05) Right angle · Monogram MBF2003 Rev AG (Composi-Lok II install spec), p.8, Table 5 ↗
- 1 more on the family tool tables.
Tool catalogs are the manufacturers' as published in the cited edition; confirm current PNs with the tool maker before purchase. Install per the OEM process specification.
Install tooling
Install tooling: MP550BFDN-5AA (Monogram MBF2003 Rev AG (Composi-Lok II install spec), p.4, Table 1) · proprietary
- MGPCL Protruding head leaf gage (break-off check)
- RM3118-05 Removal nose piece module, flush head style
Decode details
| Series | Composi-Lok II |
|---|---|
| Decode confidence | high |
| Numbering source | Monogram drawing MBF2110 Rev AB, title block, Tables I, III, IV, material notes |
- Composi-Lok II grips: "incremental 0.050\" grip lengths" (MBF2003 §2.1); the grip dash is the max grip, e.g. -300 covers .250-.300" (MBF2110/2112/2113 drawings, grip table).
- Diameter dash per the drawing's basic-dimensions table (e.g. -6 = 3/16").
- Suffix "A" "designates dual drive nut system for robotic installation" (MBF2112 drawing note 1); MBF2003's installation tooling "not applicable to Composi-Lok II which have an 'A' suffix" (MBF2003 §1.1).
Government reference cross-reference (DLA FLIS)
Government reference cross-reference (DLA FLIS)
Reference numbers the Federal Logistics Information System records against the same National Stock Number. A supply-catalog cross-reference, not an engineering-approved interchangeability: confirm against the controlling drawing or spec before substituting.
MBF2110-5-450 is listed under NSN 5320-01-350-4609 RIVET,BLIND
No other reference number is recorded against this NSN.
Source: DLA Federal Logistics Information System, via DLA PUB LOG ↗ (FLIS Data Electronic Reading Room ↗). FLIS data as of 2025-03-18 (March 2025 snapshot).
- Composi-Lok II by Monogram, blind bolt
- Datasheet (PDF) ↗
- Manufacturer page ↗
- Numbering: Monogram drawing MBF2110 Rev AB, title block, Tables I, III, IV, material notes ↗
- Geometry: MBF2110 Rev AB ↗
Lead-time risk for this family (SpecLok sourcing assessment): High
Supply signal
Supply signalfor this part number
- 1 CAGE code with a part number recorded on NSN 5320-01-350-4609 (FLIS, March 2025).
- Last DoD award for RIVET,BLIND items (FSC 5320): 2026-06-26; 3,082 awards since 2025-10-01.
- No SpecLok quotes yet.
A signal from records SpecLok holds, not availability, stock or a lead-time promise. FLIS lists who has recorded a part number for the item, not who makes it today. DoD awards carry no NSN or part number, so award activity is for the item name's class.
Sources: DLA FLIS Data Electronic Reading Room (PUB LOG) ↗, DLA PUB LOG ↗, USAspending.gov award search API ↗; DoD award data 2025-10-01 to 2026-07-06; compiled 2026-10-02.
Image credits: Monogram Aerospace Fasteners, Monogram Aerospace Fasteners catalog, p.4 ↗. Product images belong to their manufacturers.
Sources
- Monogram drawing MBF2110 Rev AB, title block, Tables I, III, IV, material notes
- Monogram MBF2003 Rev AG (Composi-Lok II install spec)
- Composi-Lok II datasheet (PDF)
- Drawing MBF2112 material notes; catalog comparison chart rates MBF2112-06-500 at 75 KSI
- Drawing MBF2120 material notes; MBF2003 Table 10A strengths apply to "all materials & head styles"
- DLA PUB LOG
- DLA FLIS Data Electronic Reading Room (PUB LOG)
- USAspending.gov award search API
- DLA FOIA Electronic Reading Room
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